[Physiological effects of air temperature and sink-source volume at milk-filling stage of rice on its grain quality].
This paper studied the grain quality and Q-enzyme activity of three rice varieties and their combinations as affected by air temperature and sink-source volume. The results showed that at the early stage of milk filling, the grains of fully milk filling under high temperature had a higher chalkiness, lower transparency, and lower rate of white rice. Compared with the grain of early-rice, that of late rice had higher gel consistency and transparency, and higher rate of white rice. Planting rice at early-or late season had no significant effect on the amylose and protein contents of rice grain. Leaf-cutting to limit source decreased grain quality markedly, while grain-thinning to decrease sink improved grain quality significantly.
Tao
Longxing
L
State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China. lxtao@mail.hz.zj.cn
Wang
Xi
X
Liao
Xiyuan
X
Shen
Bo
B
Tan
Huijuan
H
Huang
Shiwen
S
D000688:Amylose / Q000032:analysis; D002523:Edible Grain / Q000737:chemistry* / Q000254:growth & development; D012275:Oryza / Q000737:chemistry / Q000254:growth & development* / Q000378:metabolism*; D010940:Plant Proteins / Q000032:analysis; D011786:Quality Control; D013696:Temperature; D013997:Time Factors
D010940:Plant Proteins; D000688:Amylose