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 หัวเรื่อง:การแยกอิทธิพลหลักแบบผลบวกและปฏิกิริยาแบบผลคูณของการทดสอบพันธุ์อ้อยหลายสภาพแวดล้อม ผู้เขียน: ดร.ประเสริฐ ฉัตรวชิระวงษ์, รองศาสตราจารย์ , ดร.พีระศักดิ์ ศรีนิเวศน์, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractAdditive main effects and multiplication interaction ( AMMI ) is a statistical technique of multienvironment yield trial. It is used to serve three main purposes; (i) model diagnosis in which the initial model is a part of AMMI (ii) to clearify the complicated genotype by environment interactions, and (iii) improving accuracy of yield estimates (Crossa, 1990). The objective of this study was to analyse and estimate cane and sugar yield and cane CCS value using AMMI analysis. Data from 18 experiments conducted during 1984 to 1989 in which three sugarcane varieties, namely F140, UT1 and CN1, were common in all environments. Results of the analyses indicated that AMMI model can separate a larger porting from the total variation. Percent of sum of square for cane yield were 93.62, 94.01, 92.39 and 93.87 for CCS were 99.01, 89.45, 92.66 and 96.39 for sugar yield were 93.58, 95.02, 89.11 and 92.73 in plant cane, first and second ratoon, and all of three crops respectively. PCA1 score of UT1 was 0.59, 0.17 and 1.03 in cane yield, CCS and sugar yield, respectively. UT1 was rather stable in cane yield and CCS value, but sensitive to environments in sugar yield. F140 had the lowest PCA1 score (0.27) in sugar yield, which was considered stable, but it gave lower yield when compared with CN1 and UT1, respectively. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Evaluation of Specifi c Gravity of Potato Varieties in Ethiopia as a Criterion for Determining Processing Quality) ผู้เขียน: Tesfaye Abebe, ดร.เฌอมาลย์ วงศ์ชาวจันท์, ผู้ช่วยศาสตราจารย์ , นายธัญญะ เตชะศีลพิทักษ์, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractSpecifi c gravity (SG) is the measure of choice for estimating dry matter (DMC) and starch content (SC) and ultimately for determining the processing quality of potato varieties. Evaluation of the SG of 25 potato varieties was carried out at three distinct locations in the Amhara region of Ethiopia with the main objectives of determining their culinary quality and most suitable areas of production. The varieties were planted in a 5 ? 5 balanced lattice design of six replications during the 2011 rainy season. The results of the data analysis showed highly signifi cant (P < 0.01) genotypic and location differences and signifi cant (P < 0.05) genotype ? environment interactions. The pooled SG values ranged from 1.058 to 1.102. The SG of tubers of the improved variety Belete was the highest while that of Menagesha was the lowest. Furthermore, the SG values for varieties grown at Debretabor were higher than those for the corresponding varieties grown at Adet and Merawi. The DMC and SC were computed based on the SG and showed signifi cant (P < 0.01) genotypic variability. The highest DMC and SC were also obtained at Debretabor; thus, it is an ideal location to grow potatoes for high DMC and starch accumulation. Additive main effects and multiplicative interaction analysis identifi ed CIP- 392640.524, Zengena, Jalenie and Belete as stable genotypes with SG values above average. |
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