大田全生育期盐水灌溉胁迫筛选水稻耐盐恢复系  

Selection of Rice Restorer Lines with Salinity Tolerance Through Salt Solution Irrigation over Whole Growth Stage under Field Conditions

作　　者：潘晓飚 黄善军 陈凯[2] 孟丽君[2] 徐建龙[2] 

机构地区：[1]浙江省台州市农业科学研究院作物研究所,浙江临海317000 [2]中国农业科学院作物科学研究所,北京100081

出　　处：《中国水稻科学》2012年第1期49-54,共6页Chinese Journal of Rice Science

基　　金：浙江省台州市现代农业重点建设项目(091KY01);农业部948计划资助项目(2006-G51)

摘　　要：2009-2010年在浙江省三门县沿海滩涂采用0.5%盐浓度海水进行全生育期灌溉的方法,以胁迫后植株存活率、单株结实率和单株粒重为指标对明恢86背景的49个回交导入系群体进行全生育期耐盐性评价。结果表明,不同群体的田间耐盐性存在很大差异,粳稻供体导入系群体的田间耐盐性总体好于籼稻供体的导入系群体,而且在同一亚种内不同供体品种的导入系群体的耐盐性差异明显。其中,沈农265、Y134、早籼14和Gayabyeo为供体的4个导入系群体的耐盐株系的比率较高,分别为10.04%、6.98%、11.83%和7.9%。耐盐重复鉴定表明,大田全生育期耐盐性鉴定结果具有较高的可靠性。在常规栽培条件下对丰产性较好的耐盐恢复系与协青早A测交种进行鉴定,筛选出单株穗数、每穗总粒数和千粒重优势明显,单株产量比生产上对照组合显著增加的杂交组合6个。研究表明,利用大田全生育期盐胁迫筛选耐盐恢复系,不仅可以选育到在常规栽培条件下的高产组合,而且将为高产耐盐杂交新组合的选育创造有利条件。During 2009-2010, salt tolerance（ST） of 49 evaluated according to performance of ST-related traits introgression line populations derived from Minghui 86 were ncluding percentage of survival plants, seed selling rate and grain weight per plant under 0.5% salinization （sea water＋fresh water） over the whole growth stage. The results indicated that the populations differed in ST even derived from the same subspecies, indica or japonica. The introgression populatios originated from japonica parents showed better ST than those originated from indica parents, The four populations with Shennong 265, Y134, Zaoxian 14 and Gayabyeo as donor parents had high percentage of sah tolerant lines, 10.04%, 6.98%, 11.83% and 7.9%, respectively. High reproducibility of the results in the two years conformed the high reliability. The hybrids belween lhe restorer lines wilh ST and Xieqingzao A were ewduated for heterosis under conventional cuhiwttion. Six elite combinations with better performance in panicle number per plant, spikelet number per panicle, 1000-grain weight and grain yield per plant were selected from the progenies of Xieqingzao A/salt tolerant restore lines under conventional cultivation. Field salt stress over whole growth stage creat favorable conditions for breeding of hybrid rice with ST and high yield potential.

关 键 词：水稻 耐盐性 恢复系 育种 

分 类 号：S511[农业科学—作物学]