摘要
在水稻抽穗灌浆期进行人控土壤干旱,每穗实粒数、结实率、千粒重及产量均下降,但根系活跃吸收面积与α-萘胺氧化活力均增强;抗旱性强的品种,TTC还原活力增强,而抗旱性弱的品种,TTC还原活力降低,因此,水稻抗旱性强弱与TTC还原活力密切相关.
The filled grains per panicle,seed set rates,1 000 grain weight,and grain yield of 3 rice varieties decrease when their plants are treated by artificial soil drought condition at their heading and seeds set stages,however,the effective area and α NA oxidizing ability of their roots increase.At the same drought condition,the ability of TTC reduced by the roots of Xiangfu 93 4,which is drought resistant,increase while that of Chaofengzao,which is not drought resistant,decrease.So we think that the drought resistant ability of rice is relative to its root TTC reduced ability.
出处
《湖南师范大学自然科学学报》
CAS
1998年第3期64-68,共5页
Journal of Natural Science of Hunan Normal University
基金
国家"九五"重大攻关项目
关键词
水稻
抗旱性
根系活力
结实性状
产量
rice ( Oryza Sativa L.)
drought resistant ability
root activity
major characters of grain yield
grain yield