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<title>Theses (Master's degree) - Bioscience for Sustainable Agriculture / วิทยานิพนธ์ - ชีววิทยาศาสตร์เพื่อเกษตรกรรมที่ยั่งยืน</title>
<link>https://sure.su.ac.th/xmlui/handle/123456789/16111</link>
<description/>
<pubDate>Mon, 18 May 2026 06:34:25 GMT</pubDate>
<dc:date>2026-05-18T06:34:25Z</dc:date>
<item>
<title>Measurement of Some Chemicals in Rice and Effect of Exogenous Substances Under the Salinity Stress at Flowering Stage</title>
<link>https://sure.su.ac.th/xmlui/handle/123456789/28799</link>
<description>Measurement of Some Chemicals in Rice and Effect of Exogenous Substances Under the Salinity Stress at Flowering Stage; -
Lu Zaw MYO
Salinity is one of the most challenging problems that adversely affects growth and development of rice. The objectives of this study are to investigate salinity stress and the effects of foliar application of proline and trehalose at flowering stage on morphological, biochemical features and proline synthesis gene in rice. The two experiments were conducted separately using different types of exogenous substances: proline and trehalose, from January to May 2020. The experiment design used 3x4x4 factorial in Completely Randomized Design (CRD) with three replications. Three types of rice varieties (factor A) including Chai Nat 1 (CNT 1), Pathum Thani 1 (PT 1) and a salt-tolerance variety from Indonesia, Inpari 35 (IN 35) were planted in 4 salinity levels (factor B) including 0, 5, 10 and 15 dS/m with 4 different levels of proline or trehalose application (factor C) including 0, 50, 100 and 150 mM. In biochemical measurement revealed that after the proline and trehalose spray, the accumulation of proline in leaf and stem, starch content both under no salinity and salinity conditions mainly depended on genetics. As for accumulation of these chemical compositions: the sugar content, proline content or starch, the increase or decrease in the leaf or the stem depends on many factors including the type of substance used (relation of the sprayed substance and the characteristics what to be measured), the change in the amount of those substances after salinity exposure (that reflects the salinity tolerance of various varieties). However, under salinity conditions (5-15 dS/m salinity), the use of external substances such as proline or trehalose in all concentrations can promote by increasing many characteristics; excluded the water content. In reproductive stage may be one stage that is tolerant of leaf dehydration when plants growing in saline soil. Nevertheless, under no salinity condition (0 dS/m), the effect of exogenous proline or trehalose was found mostly in agronomic characteristics, yield components, and yield, but rarely affected in chemical contents (proline, sugar, starch) that accumulated in plants. Assessed by the synthesis of complementary deoxyribonucleotide (cDNA), at 10 dS/m salinity, CNT 1 and PT 1 are partially able to synthesize proline automatically in leaves, although was no received external proline sprays. Nevertheless, when proline at 50-100 mM is sprayed externally, there has been an increase in the stimulation of proline synthesis in the plant. However, may have the limit of the quantity of exogenous proline be used to stimulate the synthesis of this substance inside plants. The external proline that plant was received by spraying did not increase the accumulation in the plant at 150 mM proline. For IN 35, did not respond to increase leaf proline synthesis, although has been stimulating by proline spraying. The highest salinity level (15 dS/m), exogenous proline use does not encourage the increased synthesis of this substance in the leaves in all rice varieties. Therefore, increased deposition of proline in leaves may be obtained directly from spraying.

For the chlorophyll contents, the use of proline was higher in effectiveness to increase the values more than trehalose. The results showed that Thai rice varieties after proline spraying at high salinity (at 15 dS/m salinity) showed an increase in the accumulation of proline and sugar, although not very high, but more than in IN 35. IN 35 is resistant to salinity and to accumulate the proline in plant cells of leaves autonomic. For starch content, effect of trehalose applying showed very little change compared with proline spraying both in leaves and stems in each variety. Considering the damage on characteristics affected by salinity, the varieties have less effect or high tolerance ability to salinity is IN 35, and lower in two Thai varieties. Among Thai rice varieties, CNT 1 was affected by salinity in lower magnitude in most of the characteristics and was more sensitive by applying both proline and trehalose more than PT 1. For these reasons, CNT 1 seems higher tolerance ability to salinity more than PT 1. Since at 5 dS/m salinity, plant height and yield components were received the negative effects. Proline and trehalose showed no effect or little effect (with no significant difference) in plant height, the number of fertile tillers, and 1,000-seeds weight because these characteristics were established not consistent with the time for substance use. However, these external substances can increase the value in panicle length and filled grain percentage. Further, the effect on the percent of grain filling is likely to be consistent with the effect on pollen viability. For grain yield, to increase by applying both substances: proline and trehalose, at the flowering stage, especially at salinity conditions.; -
</description>
<pubDate>Tue, 01 Jan 0026 00:00:00 GMT</pubDate>
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<dc:date>0026-01-01T00:00:00Z</dc:date>
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<item>
<title>Measurement of Some Chemicals in Rice and Effect of Exogenous Substances Under the Salinity Stress at Flowering Stage</title>
<link>https://sure.su.ac.th/xmlui/handle/123456789/28796</link>
<description>Measurement of Some Chemicals in Rice and Effect of Exogenous Substances Under the Salinity Stress at Flowering Stage; -
Lu Zaw MYO
Salinity is one of the most challenging problems that adversely affects growth and development of rice. The objectives of this study are to investigate salinity stress and the effects of foliar application of proline and trehalose at flowering stage on morphological, biochemical features and proline synthesis gene in rice. The two experiments were conducted separately using different types of exogenous substances: proline and trehalose, from January to May 2020. The experiment design used 3x4x4 factorial in Completely Randomized Design (CRD) with three replications. Three types of rice varieties (factor A) including Chai Nat 1 (CNT 1), Pathum Thani 1 (PT 1) and a salt-tolerance variety from Indonesia, Inpari 35 (IN 35) were planted in 4 salinity levels (factor B) including 0, 5, 10 and 15 dS/m with 4 different levels of proline or trehalose application (factor C) including 0, 50, 100 and 150 mM. In biochemical measurement revealed that after the proline and trehalose spray, the accumulation of proline in leaf and stem, starch content both under no salinity and salinity conditions mainly depended on genetics. As for accumulation of these chemical compositions: the sugar content, proline content or starch, the increase or decrease in the leaf or the stem depends on many factors including the type of substance used (relation of the sprayed substance and the characteristics what to be measured), the change in the amount of those substances after salinity exposure (that reflects the salinity tolerance of various varieties). However, under salinity conditions (5-15 dS/m salinity), the use of external substances such as proline or trehalose in all concentrations can promote by increasing many characteristics; excluded the water content. In reproductive stage may be one stage that is tolerant of leaf dehydration when plants growing in saline soil. Nevertheless, under no salinity condition (0 dS/m), the effect of exogenous proline or trehalose was found mostly in agronomic characteristics, yield components, and yield, but rarely affected in chemical contents (proline, sugar, starch) that accumulated in plants. Assessed by the synthesis of complementary deoxyribonucleotide (cDNA), at 10 dS/m salinity, CNT 1 and PT 1 are partially able to synthesize proline automatically in leaves, although was no received external proline sprays. Nevertheless, when proline at 50-100 mM is sprayed externally, there has been an increase in the stimulation of proline synthesis in the plant. However, may have the limit of the quantity of exogenous proline be used to stimulate the synthesis of this substance inside plants. The external proline that plant was received by spraying did not increase the accumulation in the plant at 150 mM proline. For IN 35, did not respond to increase leaf proline synthesis, although has been stimulating by proline spraying. The highest salinity level (15 dS/m), exogenous proline use does not encourage the increased synthesis of this substance in the leaves in all rice varieties. Therefore, increased deposition of proline in leaves may be obtained directly from spraying.

For the chlorophyll contents, the use of proline was higher in effectiveness to increase the values more than trehalose. The results showed that Thai rice varieties after proline spraying at high salinity (at 15 dS/m salinity) showed an increase in the accumulation of proline and sugar, although not very high, but more than in IN 35. IN 35 is resistant to salinity and to accumulate the proline in plant cells of leaves autonomic. For starch content, effect of trehalose applying showed very little change compared with proline spraying both in leaves and stems in each variety. Considering the damage on characteristics affected by salinity, the varieties have less effect or high tolerance ability to salinity is IN 35, and lower in two Thai varieties. Among Thai rice varieties, CNT 1 was affected by salinity in lower magnitude in most of the characteristics and was more sensitive by applying both proline and trehalose more than PT 1. For these reasons, CNT 1 seems higher tolerance ability to salinity more than PT 1. Since at 5 dS/m salinity, plant height and yield components were received the negative effects. Proline and trehalose showed no effect or little effect (with no significant difference) in plant height, the number of fertile tillers, and 1,000-seeds weight because these characteristics were established not consistent with the time for substance use. However, these external substances can increase the value in panicle length and filled grain percentage. Further, the effect on the percent of grain filling is likely to be consistent with the effect on pollen viability. For grain yield, to increase by applying both substances: proline and trehalose, at the flowering stage, especially at salinity conditions.; -
</description>
<pubDate>Tue, 01 Jan 0026 00:00:00 GMT</pubDate>
<guid isPermaLink="false">https://sure.su.ac.th/xmlui/handle/123456789/28796</guid>
<dc:date>0026-01-01T00:00:00Z</dc:date>
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<title>Effects of Biochar Supplementation in Soil for Spring Onions (Allium fistulosum L.) Cultivation</title>
<link>https://sure.su.ac.th/xmlui/handle/123456789/28625</link>
<description>Effects of Biochar Supplementation in Soil for Spring Onions (Allium fistulosum L.) Cultivation; ผลของการเสริมถ่านไบโอชาร์ในดินเพื่อการปลูกต้นหอม (Allium fistulosum L.)
สายฝน สินสมุทรไทย
Biochar has been reported in terms of retaining moisture and increasing soil nutrients. That correspondents to the problem of growing spring onion (Aliurmcepa var aggregatum) in Cha-Am district in Phetchaburi province, which faces the problems of lack of water during growth. In this study, the effect of using bamboo biochar to maintain moisture in soil and promote spring onion plants on growth was evaluated. The spring onion planting experiments was conducted in agricultural area at Huai Sai Royal Development Study Center (RDSC), Cha-Am District, Phetchaburi Province. Four planting cycles of spring onion were conducted, each experiment consisted of two factors: bamboo biochar supplementaion in soil and watering at  different frequencies. he bamboo biochar was obtained by burning in pyrolysis at temperature of about 400 ๐C. All planting cycles were carried out in pots using Sandy loam soil. However, only the first planting was conducted outside the greenhouse. From planting cycle one to four, the same potting soil was used to study the effect of biochar supplemention in each planting cycle. The results showed non-significant different in all growth-related characteristics, excluding bulb formation (BF) affected by biochar supplementation in first cropping: Crop 1. The benefit of biochar supplementation in soil on many agronomic characteristics was  observed start in Crop 2-Crop 4. In Crop 3 and Crop 4, this result suggests that wtering every 8 days is not sufficient to promote the maximum spring onion growth and productivity (plant weight: PW and bulb weight: BW). Contrast, daily watering in greenhouse condition causes waterlogging. However, adding biochar can alleviate these problems; drought and excess water. Thus, the presence of interaction x watering was significant benefit effect. Clearly positive impact of soil supplemented with biochar and watering frequency showed on growth-related characteristics of spring onion in Crop 4. Therefore, excess water and water lacking in soil that affects plant growth can be alleviated by adding biochar for water absorption. These conclusions can be assessed from the changes of moisture content of soil (%MCS) with biochar enrichment and watering at different frequencies in Crop 4. The most notable things were found when used Scanning Electron Microscope (SEM) for bamboo biochar after planting in Crop 4. There are high levels of porosity in surface in the biochar treatment; which is mixed in the soil and is watered with daily frequency more than control and watering every 4 and 8 days. These observes from SEM perhaps related to water retention or nutrient release in each combination of those treatments; มีรายงานเกี่ยวกับถ่านชีวภาพ ในแง่ของการรักษาความชื้นและเพิ่มสารอาหารในดิน ที่สื่อถึงปัญหาการปลูกต้นหอม (Aliurmcepa var aggregatum) ในอำเภอชะอำ จังหวัดเพชรบุรี ซึ่งประสบปัญหาการขาดแคลนน้ำในช่วงการเจริญเติบโต ในการศึกษานี้ ประเมินผลการใช้ถ่านไผ่เพื่อรักษาความชื้นในดินและการส่งเสริมต้นหอมต่อการเจริญเติบโต การทดลองปลูกต้นหอมได้ดำเนินการในพื้นที่เษตรกรรมที่ศูนยืศึกษาการพัฒนาห้วยทรายอันเนื่องมาจากพระราชดำริ (RDSC) อำเภอชะอำ จังหวัดเพชรบุรี ได้ดำเนินการปลูกต้นหอมสี่รอบ แต่ละการทดลองประกอบด้วยสองข้อเท็จจริง ได้แก่ การเสริมถ่านไผ่ในดินและการรดน้ำที่ความถี่ต่างกัน ถ่านไผ่ที่ได้จากการไพโรไลซิสที่อุณหภูมิ 400 ๐C การปลูกทุกรอบดำเนินการในกระถางโดยใช้ดินร่วนปนทราย อย่างไรก็ตามมีการปลูกครั้งแรกนอกเรือนกระจกเท่านั้น จากรอบการปลูกที่หนึ่งถึงสี่ ดินที่ปลูกแบบเดียวกันถูกใช้เพื่อศึกษาผลของถ่านชีวภาพในแต่ละรอบการปลูก ผลการทดลองแสดงให้เห็นถึงผลความแตกต่างที่ไม่มีนัยสำคัญในทุกลักษณะที่เกี่ยวข้องกับการเจริญเติบโต ยกเว้น การแตกกอ (BF) ที่รับผลกระทบจากการเสริมถ่านชีวภาพในการปลูกครั้้งแรก: พืชผล 1 ประโยชน์ของการเสริมถ่านชีวภาพในดินในลักษณะทางการเกษตรหลายอย่างสังเกตได้จากการเริ่มต้นในการปลูกรุ่นที่ 2-4 ในพืชผล 3และ4 ผลลัพธ์นี้ ชี้ให้เห็นการรดน้ำทุก 8 วัน ไม่เพียงพอต่อการส่งเสริมการเจริญเติบโตและผลผลิตต้นหอมสูงสุด (น้ำหนัก: PW และ น้ำหนักหัว: BW) ตรงกันข้ามการรดน้ำทุกวันในสภาพเรือนกระจกทำให้เกิดน้ำขัง อย่างไรก็ตาม การเพิ่มถ่านชีวภาพร์สามารถบรรเทาปัญหาเหล่านี้ได้ ภัยแล้งและน้ำส่วนเกิน ดังนั้นการมีปฏิสัมพันธ์ของถ่านชีวภาพx การรดน้ำจึงส่งผลดีอย่างมาก ผลกระทบเชิงบวกอย่างชัดเจนของดินที่เสริมด้วยถ่านชีวภาพและความถี่ของการรดน้ำแสดงให้เห็นลักษณะที่เกี่ยวข้องกับการเจริญเติบโตของต้นหอมในพืชที่ 4 ดังนั้น น้ำส่วนเกินและน้ำที่ไม่เพียงพอในดินที่ส่งผลต่อการเจริญเติบโตของพืชสามารถบรรเทาได้โดยการเพิ่มถ่านชีวภาพเพื่อการดูดซึมน้ำ ข้อสรุปเหล่านี้สามารถประเมินได้จากการเปลี่ยนแปลงของปริมาณความชื้นในดิน (%MCS) ด้วยการเสริมสมรรถนะของถ่านชีวภาพและการให้น้ำที่ความถี่ต่าง ๆ ในพืชผล 4 สิ่งที่โดดเด่นที่สุดถูกค้นพบเมื่อใช้ Scanning Electron Microscope (SEM) สำหรับถ่านไผ่หลังปลูกใน พืชผล 4 มีความพรุนสูงในระดับสูงในการปรับปรุงด้วยถ่านชีวภาพ ซึ่งผสมในดินและรดน้ำด้วยความถี่รายวันมากกว่าาการควบคุมและรดน้ำทุก 4 และ 8 วัน ข้อสังเกตเหล่านี้จาก SEM อาจเกี่ยวข้องกับการกักเก็บน้ำหรือปล่อยสารอาหารในแต่ละการทดลอง
</description>
<pubDate>Mon, 01 Jan 0025 00:00:00 GMT</pubDate>
<guid isPermaLink="false">https://sure.su.ac.th/xmlui/handle/123456789/28625</guid>
<dc:date>0025-01-01T00:00:00Z</dc:date>
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<title>IMPROVEMENT OF CASSAVA PULP NUTRIENTS BY YEAST FERMENTATION WITH CHICKEN MANURE AND ITS EFFICACY ON DIGESTIBILITY, HAEMATOLOGICAL PARAMETERS AND GROWTH PERFORMANCE OF BARROW PIGS</title>
<link>https://sure.su.ac.th/xmlui/handle/123456789/26715</link>
<description>IMPROVEMENT OF CASSAVA PULP NUTRIENTS BY YEAST FERMENTATION WITH CHICKEN MANURE AND ITS EFFICACY ON DIGESTIBILITY, HAEMATOLOGICAL PARAMETERS AND GROWTH PERFORMANCE OF BARROW PIGS; -
 

ABSTRACT
 

One of the constraints of animal production is feed availability and cost. The aim of this research was to investigate the use of chicken manure (CM) as a nitrogen source to Saccharomyces cerevisiae yeast fermentation of cassava pulp and its efficacy on nutrient digestibility, haematological parameters, and growth performance of barrow pigs. Four fermentation experiments of cassava pulp were conducted in different treatment conditions and fermentation times in order to improve the nutrient status of cassava pulp. The results showed that the yeast fermented cassava pulp with chicken manure (YFCP) had crude protein increase from 1.99% of the plain cassava pulp to 8.54% in YFCP (p &lt; 0.05), while the crude fibre of YFCP decreased from 15.63 to 13.85%. The best improvement of YFCP was used in the formulation of diets as a replacement of maize at 4 levels (0%, 5%, 10%, and 15%). Twenty-four castrated male pigs (57.13 ± 3.29 kgs bodyweight) were separated into 4 groups, with 6 pigs for each group. The results revealed that the nutrient digestibility was significantly different (p &lt; 0.05) among groups. The control diet (0%YFCP) had the greatest digestibility percentages in all categories included dry matter, crude protein, crude fibre, gross energy, and total phosphorus. Among YFCP replacement diets, the 15%YFCP generally demonstrated a greater digestibility. The results of the feeding trial showed that there was no significant difference (p &gt; 0.05) in feed intake, weight gain, feed conversion ratio, and haematological parameters among the four treatment diets. The haematological results showed that all parameters fall under normal ranges of haematological pigs’ references. In conclusion, the results confirmed that YFCP can be used in replacement up to 15% in maize-soybean pig diets without any harmful effects.

 ; -
</description>
<pubDate>Tue, 01 Jan 0026 00:00:00 GMT</pubDate>
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<dc:date>0026-01-01T00:00:00Z</dc:date>
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