优质稻核心种质黄华占及其衍生系统理想模式研究

周少川, 李宏, 黄道强, 卢德城, 赖穗春, 周德贵, 王志东, 付崇允, 李康活
中国水稻科学, 2009, 23(2): 153-159     追溯原文......本站官方QQ群:62473826
水稻; 核心种质; 理想模式; 育种
广东省农业科学院;南农业大学农学院

为了构建优质稻核心种质黄华占及其衍生系统理想模式,指导黄华占及其衍生系统品种的进一步遗传改良,2007年早季和晚季在广州进行大田试验,设计随机区组试验考查黄华占及其衍生品种的综合农艺性状,整合黄华占及其衍生品种在南方稻区省级水稻区试结果,构建黄华占及其衍生系统理想模式。黄华占及其衍生系统的早季产量与每穗总粒数和倒2叶长呈显著正相关,相关系数分别为0.716和0.825;与每株有效穗数呈显著负相关,相关系数为-0.795。早季总粒数因子增加1个单位,产量增加3.17个单位。晚季产量与千粒重呈显著正相关,相关系数为0.734;食味品质与剑叶长、倒2叶长、倒3叶长呈显著正相关,相关系数分别为0.798、0.794和0.831。晚季剑叶宽因子减少1个单位,产量增加2.06个单位。广州地区优质稻核心种质黄华占及其衍生系统理想模式早晚季有所不同,早季应注重选育大穗、长穗、较长上3叶的株(品)系;在晚季应注重较高千粒重和较窄上3叶的株(品)系。

Ideal T ype of Rice Core Germplasm Huang huazhan and It s Der ivatives wit h Good GrainQualit y

ZHOU Shao-chuan1, 2, *, LI Hong1, HUANG Dao-qiang1, LU De-cheng1, LAI Su-i chun1, ZHOU De-gui1, WAN G Zh-i dong1, FU Chong-yun1, LI Kang-huo
Chinese Journal of Rice Sciences, 2009, 23(2): 153-159
r ice; cor e germplasm; ideal type; breeding

T o construct the ideal type of core germplasm Huang huazhan and its der ivatives, the performances of Huanghuazhan and its pedig ree varieties were investig ated in early and late-cropping seasons o f 2007 in Guang zhou, China ( 113b17c E, 23b8cN) . In early- cropping season, the yield was significantly and positively cor related to spikelet number per panicle ( r= 01 716) and the length of the 2nd top leaf ( r= 0. 825) , and significantly negatively correlated to pr oductive panicle number per plant ( r = - 0. 795) . Every 1 unit increase in the spikelet number factor caused an increase of 3. 17 unit in y ield. In latecropping season, the yield w as significantly and positively cor related to 1000- grain weight ( r = 0. 734) . Eating quality w as significantly and positively correlated to length of flag leaf, leng th of the 2nd top leaf and length of the 3rd top leaf, with cor relation coefficients of 0. 798, 0. 794 and 0. 831, r espectiv ely. Every 1 unit decrease in the flag leaf width facto r had a 2. 06 unit incr ease in yield. Ideal type of the cor e germplasm Huanghuazhan and its der ivatives for early cropping season w as differ ent fr om that for late- cropping season. Emphasis should be paid on selection of the plant type with few er panicles, bigger and longer panicle, and longer functional leaves in early-cropping season and higher 1000- grain weight, long er and nar rower functional leaves in late- cropping season in the br eeding nur sery in Guangzhou, China.


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  黄华占