摘要
以鲁麦５号和昌乐５号两种不同蛋白质含量小麦品种为材料，研究了各生育期叶片ＮＲＡ与氮素积累的关系。其结果是，在不同施氮量下，各生育期叶片ＮＲＡ、ＮＯ－３－Ｎ、ＮＨ２－Ｎ、还原Ｎ含量皆随施氮量增加而增加，但生育前期昌乐５号的皆大于鲁麦５号，而生育后期则相反，鲁麦５号的皆大于昌乐５号，籽粒蛋白质含量亦为鲁麦５号高于昌乐５号。
The relation of NRA (NRactivity) and nitrogen accumulation of leaves in each growth stage was studied on the two different protein content wheat varieties,Lumai 5 and Changle 5.The results showed that in both Lumai 5 and Changle 5 the content of NO - 3-N,NH 2-N and reduced-N as well as NRA increased with the increasing quantity of N application.Furthermore,NRA and the content of NO - 3-N,NH 2-N and reduced-N of Changle 5 were higher than that of Lumai 5 in the early growth stage,but in the late growth stage the result was reverse.Like NRA,the content of grain protein of Lumai 5 was higher than that of Changle 5 in late growth stage.The results indicated that in late growth stage NRA of leaves was an important index of grain protein content.
出处
《西北植物学报》
CAS
CSCD
1999年第2期315-320,共6页
Acta Botanica Boreali-Occidentalia Sinica
关键词
小麦
硝酸还原酶
氮素
籽粒蛋白质
wheat
NR (nitrate reductase)
nitrogen
grain protein
