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Journal:Crop Science

Abstract:Global warming would deteriorate rice quality especially for chalk characteristic. To better cope with the challenges from global warming, effects of nitrogen spikelet fertilizer on rice quality under elevated temperature during grain filling stage were investigated. FATE (Free-air Temperature Enhancement Facility) was used to increase rice canopy temperature during grain filling stage and four different growth regimes including CK (no warming without nitrogen spikelet fertilizer), ET(elevated temperature without nitrogen spikelet fertilizer), ET+N (elevated temperature with nitrogen spikelet fertilizer), CK+N (no warming with nitrogen spikelet fertilizer) were conducted. Results showed that elevated temperature decreased the appearance quality and cooking quality, while increased nutritional quality and eating quality. Grain filling rate and amyloplast development for both superior and inferior grains were obviously accelerated during early grain filling stage by elevated temperature. The application of nitrogen spikelet fertilizer could inhibit the deterioration of rice quality particularly for chalk performance without negative effect on grain weight, which was associated with the alleviation of grain filling rate and amyloplast development. The above evidence indicates the application of nitrogen spikelet fertilizer is efficient to mitigate the quality deterioration under global warming.

Co-author:She Tang,Ganghua Li,Zhenghui Liu,Chengqiang Ding,Lin Chen,Shaohua Wang,Yanfeng Ding

First Author:Zhi Dou

Indexed by:SCI

Volume:57，

Page Number:1-10

Translation or Not:no

Date of Publication:2017-05-11

Included Journals:SCI