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籼型光温敏核不育系GD-1S的选育与利用 总被引:4,自引:5,他引:4
籼型光温敏核不育系CD—1S是利用W7415S作为不育基因源与广东晚籼品种特青杂交选育而成,于1999年6月通过广东省科技厅组织的技术鉴定。GD—1S株型集散适中,育性转换特性稳定,高抗稻瘟病,开花习性和品质性状较好,容易繁殖制种。而且该不育系穗大粒多,较易组配出大稳重穗型两系杂交稻新组合。利用该不育系育成了粤杂122、粤杂889和粤杂174等两系杂交稻新组合,其中粤杂122已于2001年2月通过了广东省品种审定。 相似文献
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介绍了2602S的选育经过,并初步研究了其特征特性,2602S为籼头型光温互作型不育系,长光不育起点温度为23℃,不育期长,可育期结实较好,可恢性好,配合力强,昨用它测配的强优组合产量高,熟期适中。 相似文献
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籼型优质光温敏核不育系1892S的选育 总被引:2,自引:0,他引:2
1892S是安徽省农科院水稻研究所用培矮64S的变异单株选育的中籼光温敏核不育系,2004年8月通过安徽省技术鉴定。1892S不育期间败育彻底,不育性稳定,不育株率100%,花粉不育度和套袋自交不实率均为99.97%;不育起点温度较低(23.5℃),在合肥不育期30 d以上;开花习性好,异交结实率高达60%以上;对白叶枯病和稻瘟病的抗性分别为中抗和抗;米质优,达国标GB/T 17891-1999优质稻谷3级标准;所配组合杂种优势强,其中皖稻153(1892S/RH003)于2005年1月通过了安徽省品种审定。 相似文献
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中国水稻研究所水稻生物学农业部重点实验室选育的“籼型标记光—温敏核不育系M2S”于1995年8月28日通过了浙江省科委组织的成果鉴定。 相似文献
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携带白化转绿型叶色标记光温敏核不育系玉兔S的选育及其特征特性 总被引:24,自引:1,他引:24
以我国主栽的籼型光温敏核不育系培矮64S为起始材料,利用300 Gy的60Co-γ射线辐照干种子,经多代选择选育了一个携带白化转绿型叶色标记的新型不育系玉兔S。该不育系苗期性状明显比原亲本培矮64S差,但成熟期的主要农艺性状、育性特征、配合力、抗病性及稻米品质均与培矮64S相仿。补偿性生理机制研究表明,在分蘖、拔节和开花阶段玉兔S叶绿体内腺苷酸激酶和RuBP羧化酶的活性要比培矮64S高。遗传研究表明,白化转绿型突变性状受单隐性基因控制,并在幼苗阶段特异性表达。对不育系玉兔S在两系杂交水稻生产中的应用前景作了讨论。 相似文献
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Using photo-thermo sensitive genie male rice (PTGMS) Pei' ai 64S, W7415S, W6154S, N26S, Annong S, Nongken 58S, 7001S and 5088S as female parents and conventional indica lines 8258 and U89 as male parents, the factors affecting outcrossed seed-setting were analyzed. The PTGMS had obstacles in outcrossed seed setting influenced by inheritance and environment at varying degrees. Environmental temperature was regarded as the main factor that resulted in the outcrossed seed-setting obstacles. The sensitive stage was at the early stage of grain filling for outcrossed seed setting. There existed remarkable differences at the sensitivity stage, the duration of sensitive period, the sensitive level and the effective level of outcrossed seed-setting obstacles caused by environmental temperature among different PTGMS lines. Therefore, attention should be paid to outcrossed seed-setting obstacles in selection and utilization of PTGMS lines. 相似文献
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水稻淡黄叶隐性标记不育系育种进展 总被引:2,自引:0,他引:2
概述了杂交水稻种子纯度鉴定的主要方法以及水稻淡黄叶隐性叶色标记不育系的特点和应用价值。自从2006年水稻淡黄叶隐性标记光温敏不育系安农标810S育成以来,以该不育系为标记基因供体,采用常规杂交转育的方法,初步育成了标泰S、标88S、标CS、1166S和H159A等多个淡黄叶标记新不育系。介绍了这些不育系的主要特性及所配部分组合的表现。 相似文献
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水稻实用光温敏核不育系培矮64S不育性稳定化研究 总被引:16,自引:1,他引:16
在人工气候室的人控光温条件下,通过1997~1999年3年22.0~23.0℃的低温处理,对水稻实用光温敏核不育系培矮64S进行了育性稳定化研究。结果表明:1)在人工气候室的低温条件下,采用“株系(再)鉴定、(再)筛选单株”的方法,对稳定高世代光温敏核不育系培矮64S的不育性是可行的,并筛选出套袋自交结实率和花粉不育度两级水平均已稳定的3个株系9862、103-1和103-2,而且其不育起点温度已降至22.5℃,比原始株系降低了近1℃。2)现有高世代光温敏核不育系培矮64S仍然存在育性的不稳定性,表现在受低温影响后其后代不同株系间花粉不育度和套袋自交结实率存在明显差异,说明对现有高世代光温敏核不育系的育性提纯很有必要。 相似文献
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籼稻光(温)敏不育系新光S育性转换的光温反应 总被引:7,自引:1,他引:7
新光S是与农垦58S不同来源的具育性转换特性的不育系。对其育性转换的光温反应特性研究结果表明,该不育系在15.0 h长光照与所有处理温度(平均温度30.1℃、24.1℃和23.1℃)的光温组合下和30.1℃高温与所有处理光照时间(15.0 h、14.0 h和12.5 h)的光温组合下,表现完全不育;在14.0 h与23.1℃和24.1℃的光温组合下,育性部分恢复;仅在12.5 h短光照与23.1℃和24.1℃的光温组合下,育性才趋于正常。对自交结实率的两因子方差分析表明,单独的光周期效应和温度效应均不显著(p>0.05),仅光温互作效应达极显著水准(p<0.01),属典型的光温互作型。在杭州自然条件下,新光S表现出较长(约2个月)的稳定不育期,但秋季繁殖的结实率未达到在人工气候箱的短日低温下的结实率水平。对新光S这类光温互作型籼型不育系的实用价值作了评价。 相似文献
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An investigation was carried out with three newly developed temperature sensitive genic male sterile(TGMS) lines for their floral traits, seed production potential and outcrossing ability in ten cross combinations. In the TGMS lines, fertile pollens had an average diameter of 0.89 mm while the sterile pollens was with 0.02 mm diameter.TS-29-150 GY produced the biggest fertile pollens with 0.92 mm and other two lines produced relatively smaller pollens with 0.91 and 0.85 mm. Pollen fertility during the fertility reversion period was an average of 60.7%. TS-29-150 GY had the maximum of 66.9% spikelet fertility whereas other two lines(TNAU18S and TNAU60S) had relatively lower spikelet fertility of 27.8% and 26.7%, respectively.Average of 17.00 g of seed yield was obtained in the TGMS lines during the fertility reversion period. TS-29-150 GY had the highest value of 21.20 g of seed yield while TNAU18 S and TNAU60 S produced 16.6 g and13.2 g of seed yield, respectively. The low seed production ability of these three TGMS lines was attributed only to the environmental conditions prevailing during the period. All three TGMS lines had considerable outcrossing potential of 41.2%, 24.6% and 25.0%, respectively. The cross combinations viz.TNAU18S/IET21508(36 g/plant), TNAU18S/IET21044(13 g/plant), TNAU18S/IET21009(26.5 g/plant),TNAU60S/CB-09-106(26.2 g/plant), TNAU60S/IET21009(14 g/plant) and TS29-150-GY/DRR 3306(39.2g/plant) showed perfect synchronization with acceptable hybrid seed yield, indicating suitability of TGMS system under Indian condition. Based on the outcrossing related traits viz. panicle exertion, angle of glume opening, stigma length and pollen size, TNAU18 S was identified as the best, followed by TS-29-150 GY. 相似文献
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华南晚籼夜公细胞质(Y型)雄性不育系的选育 总被引:8,自引:1,他引:7
由华南晚籼迟熟品种夜公细胞质育成了Y型不育系,证明华南晚籼迟熟品种中存在着雄性不育细胞质。Y型雄性不育细胞质效应优于野败,其不育系表现全不育,不育性稳定,恢保关系与野败相似,生育期遗传多样化,配合力强,已由其育成一批强优组合。由Y华农A育成的华优86和华优桂99 表现高产稳产、米质优良、抗病性强,表明Y型不育系是可以开发利用的新型细胞质雄性不育系。 相似文献
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Using photo-thermo sensitive genic male rice (PTGMS) Pei‘ ai 64S, W7415S, W6154S, N26S, Annong S, Nongken 58S,7001S and 5088S as female parents and conventional indica lines 8258 and U89 as male parents, the factors affecting outcrossed seed-setting were analyzed. The PTGMS had obstacles in outcrossed seed setting influenced by inheritance and environment at varying degrees. Environmental temperature was regarded as the main factor that resulted in the outcrossed seed-setting obstacles.The sensitive stage was at the early stage of grain filling for outcrossed seed setting. There existed remarkable differences at the sensitivity stage, the duration of sensitive period, the sensitive level and the effective level of outcrossed seed-setting obstacles caused by environmental temperature among different PTGMS lines. Therefore, attention should be paid to outcrossed seed-setting obstacles in selection and utilization of PTGMS lines. 相似文献
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