华南农业大学学报2017，Vol.38Issue(2)：38-42,5.DOI:10.7671/j.issn.1001-411X.2017.02.008
减库对荞麦籽粒灌浆特性及产量的影响
Effects of sink-limiting treatment on grain filling characteristics and yield of Fagopyrum esculentum
摘要
Abstract
[Objective] To explore the source-sink relationship in buckwheat ( Fagopyrum esculentum Moench).[Method]The common buckwheat cultivar Fengtian 1 was selected as material .Treatment ( cutting the unopened flowers and inflorescences ) was conducted at the 7th day after flowering , and non-treatment was used as control .The major agronomic characteristics and metabolite contents were meas-ured, and the grain filling process was evaluated with Richards mathematical equation .[Result]There was no significant difference in the contents of soluble sugar and chlorophyll between sink -limiting treat-ment and control during the early-middle grain filling , as well as the plant height , branch number , node number at maturity .The carbohydrate accumulation was accelerated during the early-middle grain filling under sink-limiting treatment .However , there was no significant difference in the grain number per plant and grain weight per plant between sink-limiting treatment and control .Compared with control , the yield of treatment significantly decreased .The determination coefficients ( R2 ) of treatment and control were 0.996 and 0.992 respectively , which showed that the Richards growth curve well reflected buckwheat grain filling process .[Conclusion]The Richards growth curve is suitable for estimating buckwheat grain filling process .The insufficient source or unreasonable distribution of photosynthate is an important limit-ing factor for buckwheat yield improvement .Adjusting photosynthate synthesis and allocation should be effective to increase buckwheat yield .关键词
荞麦/减库处理/灌浆特性/Richards方程/产量Key words
Fagopyrum esculentum/sink-limiting treatment/grain filling characteristic/Richards ’ s equation/yield分类
农业科技引用本文复制引用
赵权,刘昌敏,张余,宋毓雪,王雨,孔德章,梁成刚,黄凯丰..减库对荞麦籽粒灌浆特性及产量的影响[J].华南农业大学学报,2017,38(2):38-42,5.基金项目
973计划前期研究专项（2014CB160312）；国家自然科学基金（31360318，31401315，31560358）；贵州省普通高等学校荞麦栽培生理及推广特色重点实验室建设项目（黔教合KY字［2015］328）；贵州省优秀青年科技人才培养对象专项资金（黔科合人字［2013］03号）；贵州省科技合作计划项目（黔科合LH字［2015］7770号）；贵州师范大学资助博士科研项目 （）
