Evaluation on the High Yielding,Stability and Comprehensive Performances of Check Cultivars in National Cotton Regional Trials in the Yangtze River Valley |
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| Authors: | Shiqiao JIN Naiyin XU |
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| Institution: | 1. National Agricultural Technology Extension and Service Center, Ministry of Agriculture, Beijing 100125, China
2. Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China |
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| Abstract: | Objective] This study was to analyze the high yielding, stability, adaptability and main characteristics of check cultivars in national cotton regional trials in the Yangtze River Valley in 2000-2013, with the aim to provide theoretical basis for the reasonable selection of check cultivars for cotton regional trials. Method] GGE biplot analysis method was used to carry out the intensive analysis and comprehensive comparisons on the performances and differences of the 9 major characters of check cultivars, namely, lint cotton yield, stability, and other main traits including boll weight, boll number, lint percentage, fiber length, fiber strength, micronaire value, plant height and seed index. Result] Ezamian 10 was suitable in the majority of cotton planting regions in the Yangtze River Valley, with the best high yielding ability and perfect yield stability. The yielding ability of Xiangzamian 8 ranked the second, but its stability was the poorest. Xiangzamian 8 was of the specific adaptive cultivar with relatively good performance in high yielding but the poorest stability.The suitable planting areas of Xiangzamian 8 were limited to the cotton planting region around Dongting Lake in Hunan province, Poyang Lake in Jiangxi Province,the Coastal region in Jiangsu Province and Wuhan district in Hubei Province. Xiangzamian 2 performanced poorer in both yielding and stability, while Simian 3ranked first in stability but the last in yielding ability. The dominant character of Xiangzamian 8 and Xiangzamian 2 were high cotton plants and big bolls. Simian 3performanced super in lint percentage and fiber length. Ezamian 10 was strong in cotton boll formation ability, lint cotton yielding, fiber strength and seed size, as well as high micronaire value. Conclusion] The outstanding performance of Ezamian 10 in high and stable yield in the Yangtze River Valley in recent years has effectively promoted the high yielding ability of candidate varieties in cotton regional trials in the area. |
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| Keywords: | Cotton (Gossypium hirsutum L ) GGE biplot Check cultivar the Yangtze River Val ey (YaRV) Crop regional trial |
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