【摘要】 运用王夫玉等人提出的生境敏感性评价方法 ,初步研究了 6个茎瘤芥代表品种产量生境敏感性及其与主要性状的关系。结果表明 :(1)不同品种 ,产量生境敏感性不同 ;据此 ,可将茎瘤芥品种分为生境敏感型品种、生境弱感型品种和生境钝感型品种。参试品种中 ,涪丰 14和巴中羊角属生境钝感型 ;半碎叶、蔺市草腰子和涪杂 1号属生境弱感型 ;永安小叶属生境敏感型。 (2 )产量生境敏感性指数SI(SI愈小 ,品种对生境反应愈敏感 )与Ⅰ (8月 2 0日播种 )、Ⅱ (8月 30日播种 )期瘤茎纵径 ,与Ⅱ、Ⅲ (9月 9日播种 )期茎 /叶比呈显著或极显著负相关 ,相关系数分别为 - 0 84 8 、- 0 835 、- 0 872 、- 0 92 5 。本文初步提出在涪陵 8月 2 0日 - 8月 30日播种的瘤茎纵径和 8月 30日至 9月 9日播种的茎 /叶比可作为茎瘤芥产量生境敏感性评价的重要指示性状。更多还原

【Abstract】 The general method of evaluating environmental sensitivity that was put forward by Wang Fu-Yu etc. was used to study environmental sensitivity of yield of six tumorous stem mustard varieties and relationships between environmental sensitivity and main characters. The results showed that the different varieties had different environmental sensitivity. Tumorous stem mustard varieties could be divided into strong environmentally sensitive variety(ESV), weak environmentally variety(EWV) and environmentally insensitive variety(EIV) by environmental sensitivity. Fufeng14 and Bazhong yangjiao belonged to EIV. Bansuiye, Linshi caoyaozi and Fuza 1 to EWV and Yongan xiaoye to ESV. There were highly and significantly negative correlations between sensitivity index(less SI,more sensitive) and vertical length under I (the sowing date was 20 August) and Ⅱ(the sowing date was 30 August) date and stem/leaf under Ⅱ and Ⅲ (the sowing date was 9 september) date, the correlated coefficients were -0 848*,-0 835*,-0 872* and -0 925 **respectively. That vertical length under sowing date from 20 August to 30 August and ratio between stem and leaf fresh weight under sowing date from 30 August to 9 september may be used as reasonable index for selection of environmental sensitivity of yield.更多还原