中国农业科学（英文版）2002，Vol.1Issue(3)：280-284,5.
Determination of Resistance to Lodging by Stem Strength in Wheat
Determination of Resistance to Lodging by Stem Strength in Wheat
XIAO Shi-he 1ZHANG Xiu-ying 1YAN Chang-sheng 1ZHANG Wen-xiang 1HAI Lin 1GUO Hui-jun1
作者信息
- 1. Institute of Crop Breeding and Cultivation, CAAS, Beijing 100081
- 折叠
摘要
Abstract
Stem strength affects directly the resistance of wheat plant to lodging. Unfortunately, the determination of the stem strength is not perfect for wheat breeding and genetics up to now. In this study a prostrate tester was engaged for testing the stem strength of 661 wheat varieties and of 1183 single plants from a F2 population. The results showed that the suitable time to determine the stem strength should be from milk stage to dough ripe stage. The stem strength at the maturity would decrease and it was not easy to distinguish the difference among the varieties. The single plant with a strong stem could be judged using the prostrate tester from the F2 population. By testing the stem strength and anatomic characters of 30 varieties, a significant negative relationship between the pith diameter of the upper internodes and the stem strength was observed. On the other hand, there was a significant positive relationship between the stem diameter of the lower internodes and stem strength. It was suggested that a wheat breeder should breed the cuitivar with a strong stem, because the spike weight and biomass yield were significantly related to the stem strength.关键词
Wheat/Lodging resistance/Stem strengthKey words
Wheat/Lodging resistance/Stem strength引用本文复制引用
XIAO Shi-he,ZHANG Xiu-ying,YAN Chang-sheng,ZHANG Wen-xiang,HAI Lin,GUO Hui-jun..Determination of Resistance to Lodging by Stem Strength in Wheat[J].中国农业科学（英文版）,2002,1(3):280-284,5.
