模拟昼夜变温对水稻种子萌发与种苗初期生长的影响  

Effect of alternating night temperature on rice seed germination and early seedling growth

作　　者：白嵩[1] 纪秀娥[2] 史留功[2] 白宝璋[3] 

机构地区：[1]广东省农业科学院水稻研究所,广东广州510640 [2]周口师范学院生物系,河南周口466000 [3]吉林农业大学农学院,吉林长春130118

出　　处：《河北农业大学学报》2007年第1期5-7,共3页Journal of Hebei Agricultural University

基　　金：国家农业科技跨越计划项目(99-01-02)

摘　　要：利用人工气候箱,模拟不同昼夜温度(CK:30/30℃;TR1:30/25℃;TR2:30/20℃;TR3:30/15℃;TR4:30/10℃)培养水稻品种粤香占幼苗,研究其对种子萌发及种苗初期生长的影响,旨在为生产上培育壮秧、壮苗提供理论依据。结果表明,昼夜变温可显著提高水稻秧苗素质:株高降低、茎秆变粗、根系发达、干重增加。昼夜变温处理对水稻幼苗的某些生理生化指标产生明显影响。其中,30/20℃(TR2)处理组水稻幼苗淀粉酶活性最高(比对照高17.14%);30/15℃(TR3)处理组水稻幼苗根系活力最高(比对照高12.91%)。This article dealt with the effect of alternating temperature on rice seedlings.After the treatment,the diathesis of seedlings were being affected： the plant height became shorter,the stem diameter became larger,the root volume became larger and the dry weight of root became bigger.And some of the plant bio-physiological characteristics were also being affected： the amylase activity of the rice seedlings was the highest under the treatment 30/20℃（TR2）,the root activity of the rice seedlings was the highest under the treatment 30/15℃（TR3）.

关 键 词：变温 水稻 淀粉酶活性 根系活力 

分 类 号：S511[农业科学—作物学]