Breeding and Application of Medium-maturing Late Season Indica Hybrid Rice Taoyou Xiangzhan with Good Grain Quality

Taoyou Xiangzhan, derived from the indica CMS line Taonong 1A and Huanghuazhan （a fine quality conventional rice variety）, is a new medium-maturing late season indica hybrid rice combination. It was evaluated as the 2nd class of fine quality rice variety in Hunan Province in 2012. It is characteristic of high-yielding ability, fine grain quality, good plant type, good lodging resistance and fertilizer tolerance, strong tillering ability and good discoloring at the late growth stage. Taoyou Xiangzhan was registered for release to commercial production by Hunan Provincial Crop Variety Appraisal Committee in June, 2015.

从丰优香占的育成谈优质杂交籼稻育种

对优质杂交籼稻丰优香占(粤丰A/R6547)及其亲本的特征特性和品质分析结果表明,丰优香占糙米率、长宽比、透明度、直链淀粉含量和碱消值接近双亲中值;整精米率明显高于双亲中值,偏向于高值亲本;垩白粒率、垩白度和胶稠度明显低于双亲中值,偏向于低值亲本;香味源自母本。针对杂交稻米垩白粒率高、垩白度大和胶稠度低的突出问题,提出优质杂交籼稻育种的关键是选育优质不育系和优质恢复系,特别是优质不育系的选育,通过广泛收集水稻种质资源,筛选理想材料作亲本,对现有不育系和恢复系进行遗传改良,优化组配,可达到培育优质杂交籼稻的目标。

广东丝苗米品种南晶香占在郴州市作烟后稻种植的示范表现及高产栽培技术

南晶香占是广东省农业科学院水稻研究所选育的丝苗型常规稻新品种。本文介绍了南晶香占在郴州市作烟后稻种植的示范表现,并从播种育秧、移栽、肥水管理、病虫害防控等方面总结了其高产栽培技术,以期为该品种作烟后稻推广种植提供参考。

优质中熟杂交晚籼新组合桃优香占的选育与应用

桃优香占为三系不育系桃农1A与优质常规稻黄华占配组育成的中熟杂交晚稻新组合。该组合2012年被评为湖南省2等优质稻米;具有高产、优质、株型松紧适中、耐肥抗倒、分蘖能力强、后期落色好等特点,适合在湖南省双季稻区作晚稻种植,2015年6月通过湖南省农作物品种审定委员会审定。