Seed vigor evaluation based on adversity resistance index of wheat seed germination under stress conditions.

doi:10.13287/j.1001-9332.201609.014

Abstract

Abstract: A total of 16 wheat cultivars were selected to detect seed vigor of different genotypes using standard germination test, seed germination test under stress conditions and field emergence test. The adversity resistance indices of seed vigor indices and field emergence percentage under different germination conditions were used as the indices to evaluate adversity resistance. Principal component analysis and cluster analysis were used for the comprehensive evaluation of seed vigor. Results showed that drought stress, artificial aging and cold soaking treatments affected seed vigor to some extent. The adversity resistance indices of the artificial aging and cold soaking tests were significantly positively correlated with the field emergence percentage, while the adversity resistance index of drought stress test had no significant correlation with the field emergence percentage. 16 wheat cultivars were classified as three groups based on the principal component analysis and cluster analysis. Yunong 949, Yumai 49-198, Luyuan 502, Zhengyumai 9987, Shimai 21, Shannong 23, and Shixin 828 belonged to high vigor seeds. Xunong 5, Yunong 982, Tangmai 8, Jimai 20, Jimai 22, Jinan 17, and Shannong 20 belonged to medium vigor seeds. The other two cultivars, Chang 4738 and Lunxuan 061, belonged to low vigor seeds.

CHEN Lei-tai, SUN Ai-qing, YANG Min, CHEN Lu-lu, MA Xue-li, LI Mei-ling, YIN Yan-ping. Seed vigor evaluation based on adversity resistance index of wheat seed germination under stress conditions.[J]. Chinese Journal of Applied Ecology, 2016, 27(9): 2968-2974.

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