The plant type and dry matter production characteristics were studied by using three C Liangyou hybrid rice combinations as materials and Shanyou 63 as a control. Comparing to Shanyou 63, the C Liangyou hybrid rice combinations showed narrower and longer uppermost three leaves, narrower leaf angles and larger total leaf area; maintained stronger root vigor and higher net photosynthetic rate and contents of chlorophyll at the full heading stage; had shorter and wider base internodes and stronger lodging resistance, longer middle internodes, and a long uppermost internode occupying 42.77% of total stem length; displayed more photosynthate accumulation and greater transportation ability. The dry matter exportation and dry matter accumulation in stem and leaves after heading significantly and positively correlated with the grain yield for the C Liangyou hybrid rice combinations. Ideal plant type, stronger dry matter production and transportation ability at the middle and late growth stage are the main cause leading to high yield of the C Liangyou hybrid rice combinations.
TANG Wen-bang,ZHANG Gui-lian,XIAO Ying-hui,DENG Hua-bing,FAN Ke,LIU Guo-hua,CHEN Li-yun*
. Plant Type and Dry Matter Production Characteristics of C Liangyou Hybrid Rice
Combinations[J]. Chinese Journal OF Rice Science, 2011
, 25(2)
: 189
-194
.
DOI: 10.3969/j.issn.1001-7216.2011.02.011
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