Effects of Dynamic High Temperature and Drought on Yield and Quality of Soft Japonica Rice During Filling Stage
Received date: 2022-08-31
Online published: 2022-11-17
The effects of dynamic temperature and drought on yield and quality of soft japonica rice Yangnongxiang 28 were studied with three treatments of dynamic high temperature(HT), drought(D), high temperature and drought(HTD) during filling stage, and the normal temperature moisture as CK. The results showed that, compared with CK, the 1 000-grain weight, seed setting rate and yield of HT treatment increased significantly, while that of D treatment decreased, and the difference between HTD treatment and CK was not significant. Compared with CK, the three treatments all decreased the milled rice rate, whole milled rice rate, amylose content and breakdown value, and increased the chalkiness rice rate, chalkiness degree, protein content, and disintegration value of Yangnongxiang 28. Among them, the difference of milled rice rate, whole milled rice rate, chalkiness rice rate and chalkiness degree reached a significant level. High temperature and drought at grain filling stage affected rice quality, and the effect of high temperature and drought combined treatment was greater than that of single treatment.
Key words： soft japonica rice; grain filling stage; high temperature; drought; yield; quality
YU Enwei, XIA Chenyu, CONG Shumin, XUE Jiantao, HU Yajie . Effects of Dynamic High Temperature and Drought on Yield and Quality of Soft Japonica Rice During Filling Stage[J]. China Rice, 2022 , 28(6) : 9 -11 . DOI: 10.3969/j.issn.1006-8082.2022.06.002
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