Title: Studies on the Accumulation and Transformation of Assimilation Product of Heavy Panicle Type Rice Using ~(13)C Labeling Technique
Abstract: In order to study on the accumulation and transformation of assimilation product of heavy panicle type rice,in this experiment,the accumulation and transformation of assimilation product in different periods of heavy panicle type rice varieties were studied. Besides this,based on the13C labeling technique,the photosynthetic products were studied as well. Results showed that the grains per panicle and panicle weight of heavy panicle varieties were significantly greater than in a medium-sized panicle. The net photosynthetic rate of flag leaf and SPAD value of upper leaves were significantly higher than in a medium-sized panicle. The total13C assimilation of heavy panicle varieties was significantly higher than medium-sized panicle varieties,especially in the latter part of grain filling,but the13C assimilation of medium-sized panicle varieties was significantly higher in stems and leaves. Heavy panicle with strong CO2assimilation capacity and obvious advantages of the accumulation of photosynthetic products after heading were considered. Compared with the medium-sized panicle varieties,the transfer amount of photosynthetic products,transfer rate and the percentage of dry matter accumulation of grain yield from heading to maturity were significantly higher than those in heavy panicle varieties,and also has a higher yield potential. This study provided the theoretical basis for rice super high yield breeding and Cultivation.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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Cited By Count: 2
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