In order to understand the breeding situation and trend of the latematurity medium japonica rice varieties in Jiangsu Province, the regional trial data and yield and quality of fortyfive latematurity medium japonica rice varieties released in last thirty years were analyzed, which would provide a reference frame for the improvement and breeding of new varieties. The regional trial data showed that there were three development phases of yield of the latematurity medium japonica rice varieties and the representative varieties were Yanjing 2 with yield of over 500 kg/667m2 bred in 1983, Wuyujing 3 with yield of over 580 kg/667m2 bred in 1992, Wuyunjing 8 with yield of over 650 kg/667m2 bred in 1999, respectively. Yield of varieties bred after 2005 was fluctuated around 600 kg/667m2. Yield and quality of fortyfive latematurity medium japonica rice varieties identified at Yangzhou in 2012 showed that 1) yield of varieties bred in different periods was all fluctuated from 500 kg/667m2 to 600 kg/667m2 and had not been developed significantly, 2) chalky grains of varieties had been improved significantly, but chalkiness and taste quality of varieties were still needed to be improved.
ZHANG Honggen1, ZHU Guoyong1, FENG Zhiqiang1, XU Ming2, JI Jianan2, PEI Yan1, QIAN Kai1, TANG Shuzhu1,*, GU Minghong1
. Analysis on Yield and Quality of the Latematurity Medium japonica Rice Varieties Released in Jiangsu Province in the Last 30 Years[J]. Chinese Journal OF Rice Science, 2014
, 28(3)
: 327
-334
.
DOI: 10.3969/j.issn.1001-7216.2014.03.013
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