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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (15): 172-178.

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

不同栽培条件对中籼稻茎秆抗倒伏性状的影响

石扬娟   

  • 收稿日期:2010-04-06 修回日期:2010-05-13 出版日期:2010-08-05 发布日期:2010-08-05

Influence of Different Cultivation Conditions on Stalk Physical Characteristicsof Medium Matured Rice

  • Received:2010-04-06 Revised:2010-05-13 Online:2010-08-05 Published:2010-08-05

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摘要：

研究了6个抗倒性不同的中籼稻品种在3个施肥水平，3种栽插密度下的茎秆物理性状。分析了它们与植株抗倒性能的关系。结果表明，栽培条件不同，植株株高不同，株高与抗倒性的关系亦不同。茎秆第一伸长节间长度与植株抗倒性能呈负相关，第二伸长节间长度与植株抗倒性能多呈负相关，第三伸长节间长度与抗倒性能呈正相关；基部茎秆粗度与植株抗倒性能多呈极显著正相关；基部茎秆厚度与植株抗倒性能呈极显著正相关。适宜的肥力水平和栽插密度可以使株高与茎秆物理性状优化组合。品种不同，植株茎秆物理性状不同，植株抗倒性能也不同。

关键词: 稻瘟病菌, 稻瘟病菌, RhoGEF, 同源重组, 基因敲除

Abstract:

Stalk physical characteristics of 6 varieties with diferent lodging—resistances at 3 nitrogen levels and 3 planting densities were studied．The relationships between stalk physical characteristics and lodging resistances of the plants were analyzed.The results indicated that the plants height were different, the relationships between the plants height and lodging resistances were also different under different cultivation conditions.The plant Lodging resistance is negatively correlated with the length of the first internode．and most negatively correlated with the length of the second internode．and positively correlated with the length of the third internode． and most significantly positively correlated with the area of the basal stalk. and significantly positively correlated with the thickness of the basal stalk.The fit nitrogen levels and planting densities could settled the plants height and stalk physical characteristics at a better level . There were evident diferences between varieties in the stalk physical characteristics and the plants Lodging resistances