摘要
在大田中研究了灌2水(底水+冬水)、3水(底水+冬水+拔节水)和4水(底水+冬水+拔节水+开花水)3种灌水处理对杂种小麦旗叶光合特性和产量的影响。结果表明,随灌水次数增多,杂种及其亲本旗叶净光合速率(Pn)、叶绿素含量(Chl)、可溶性蛋白质含量(Pr)、气孔导度(gs)和叶肉导度(gm)升高,光合功能持续期(RSP和PAD)延长,叶源量(LSC)增加,籽粒产量和产量构成因素增加。杂种旗叶的Pn、Chl、Pr、gs和gm对灌水次数的反应较亲本敏感。上述性状的离中优势(Hm)也随灌水次数的增多而增大。
A field experiment with three treatments of different irrigation times at different stage was conducted during wheat growing period. The results showed that with the increase of irrigation times, the net photosynthetic rate（ Pn ）, chlorophyll concentration（Chl）, soluble protein contents（Pr）, stomatal gas conductance（ gs ）, mesophyll gas conductance（ gm ）, relative steady phase of chlorophyll content（ RSP）, photosynthetic active duration（PAD） and leaf source capacity（LSC） of flag leaf increased in wheat hybrid and its parents, and the grain yield and yield components increased also. The Pn, Chl, Pr, gs and gm of flag leaf in hybrid were more sensitive to the times of irrigation than that in its parents at different stages after flag leaf was fully expanded. The heterosis from mid-parent （ Hm ） of all above traits increased with the increase of the irrigation times.
出处
《作物学报》
CAS
CSCD
北大核心
2006年第3期410-414,共5页
Acta Agronomica Sinica
基金
国家粮食丰产科技工程河北省课题(2004BA520A07)
河北省博士资金(00547001D-6)
河北农业大学"9816科技计划"资助
关键词
灌水次数
杂种小麦
旗叶
光合特性
籽粒产量
Irrigation times
Wheat hybrid
Flag leaf
Photosynthetic characteristics
Grain yield
作者简介
张永丽（1973-），女，河北武强县人，农学硕士，在读博士研究生，讲师，主要从事小麦栽培生理研究。
通讯作者：肖凯。
通讯作者：李雁鸣。
