籼型耐高温三系不育系巨风2A的选育   总被引：2，自引：0，他引：2  

赵开荣  田雨  王学安  张晓玲  方华明  黄代金  张玉祥  贺丽  黄蓉 《湖北农业科学》2016,(2):290-292

以优质常规材料9526为母本,宜陵1B为父本杂交,优选后代与宜陵1A回交而育成的早熟中籼型三系不育系巨风2A,具有耐高温、高异交率、高配合力,所配杂交稻熟色好等优点,应用前景广泛。2014年8月通过了湖北省农作物品种审定委员会的现场鉴定,2015年通过了湖北省审定。  相似文献   

粳型光敏感核不育水稻杂种优势的研究     

许传波 《湖北农学院学报》1991,(1)

本文观察了5个种植在武汉和荆门的粳稻光敏感核不育品系之间的杂种 F_1。结果证明,杂种 F_1的主要经济性状均优于其父本和对照,1541S 和背子谷 S 的配合力提高,其杂种优势明显。F_1的主要经济性状对比其父本的回归分析表明,对于不同的 RGMS 品系的选择标准应是不同的。此外,本文还分析了4种产量构成因素,证明有效穗数和每穗粒数是决定因素。  相似文献   

大白菜萝卜胞质雄性不育系RC7单株产种量构成因素分析   总被引：1，自引：0，他引：1  

赵利民  柯桂兰 《中国农学通报》2006,22(7):393-397

应用线性回归和相关分析的方法,研究了新育成的大白菜萝卜胞质雄性不育系RC7的单株产量构成因素及其相关性,研究结果表明:不育系RC7的单株有效角果数(r=0.96583**)、二级分枝数(r=0.96419**)、每果粒数(r=0.75701**)、主花序有效角果数(r=0.49024*)及主花序有效长度(r=0.40623*)与单株产种量之间存在极显著或显著的正相关关系。在此基础上,建立了不育系RC7及其保持系单株种子产量的多元线性回归方程。在利用该不育系制种过程中,栽培管理上应以增加分枝数,尤其是二级分枝数,作为高产的主攻方向。  相似文献   

小麦质不育系花药及雌蕊邻苯二酚氧化酶同工酶分析     

彭永康  祁忠占 《华北农学报》1991,6(1):7-12

小麦细胞质雄性不育系、保持系花药三个不同发育时期的邻苯二酚氧化酶同工酶存在明显差异,不育系中的同工酶谱带数多于保持系.考虑到小麦细胞质雄性不育系的细胞核与保持系相同,但具有与保持系不相同的不育细胞质,故邻苯二酚氧化酶同工酶可能与植物的雄性不育特性有某种联系.雌蕊中的邻苯二酚氧化酶同工酶在不育系与保持系间基本相同,这可能与雌蕊中不育系、保持系间的核质组成相同有关,这一事实似乎从另一侧面说明了邻苯二酚氧化酶与不育特性存在着某种联系.  相似文献   

Pollen and coenocytic microspore germination in male-fertile and malesterilemsl soybean     

L. F. Chen  M. C. Albertsen  R. G. Palmer 《Euphytica》1987,36(1):333-343

Summary Light and fluorescence microscopy were used to study coenocytic microspore germination from male-sterile (ms1 ms1) soybean plants. Anther squashes from male-sterile plants revealed that a low frequency of natural coenocytic microspore germination occurred in male-sterile anthers of four independent lines; [ms1-North carolina (T260H),ms1-Urbana (T266H),ms1-Tonica (T267H), andms1-Ames (T268H)]. Abnormalities such as giant tubes, branched tubes, tubes with swollen areas, and multiple tubes were observed from coenocytic microspores from all four lines. The Urbana line, however, demonstrated a higher percentage of coenocytic microspore germination than did the other three lines. Flowers of the Urbana line from both malefertile and male-sterile plants, as well as gynoecia pollinated with coenocytic microspores from sterile plants, were used for in vivo studies. Pollen-tube growth appeared normal in male-fertile plants. In contrast, coenocytic microspore tubes rarely were observed in gynoecia from male-sterile plants or in gynoecia from malefertile plants that had been artificially cross-pollinated withms1 ms1 plants. Few tubes from coenocytic microspores were observed in the vicinity of the micropylar region. A low frequency of seed set was achieved in the greenhouse on Urbana male-sterile plants grown in the absence of male-fertile plants. Thus, we believe either that some gametes from coenocytic microspores are able to participate in fertilization at low frequency or that apomixis occurs inms1 ms1 plants.Joint contribution: Agricultural Research Service, U.S. Department of Agriculture, and Journal Paper No. J-12310 of the Iowa Agriculture and Home Economics Experiment Station, Ames IA, 50011 USA. Project 2471.  相似文献   

A partially male-sterile mutant line of soybeans,Glycine max (L.) Merr.: inheritance     

David M. Stelly  Reid G. Palmer 《Euphytica》1980,29(2):295-303

Summary A partial male sterility system in the soybean (Glycine max (L.) Merr.) germplasm population AP6(SI)CI was found to be controlled monogenically by a recessive allele, msp. Observations of msp msp plants in different environments suggested that environmental conditions significantly affect expressivity of the msp allele with respect to male sterility. We obtained no experimental evidence of cytoplasmic effects on msp expression. Background genotypes, however, seem to affect msp expressivity through their determination of flowering dates and resultant interactions with varying environmental conditions.Homogeneous populations of partially male-sterile plants can be generated by increasing families of msp msp plants in fertility-inducing environments, if measures are implemented to prevent the introduction and/or build-up of fertile genotypes that arise from natural cross-pollinations.Joint contribution: North Central Region, Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, and Journal Paper No. J-9596 of the Iowa Agriculture and Home Economics Experiment Station, Ames, Iowa 50011; Project 2107.  相似文献   

甘蓝型油菜隐性核不育系ZWAB的选育及其临时保持系和恢复系的筛选   总被引：5，自引：4，他引：5  

张太平  王军  魏忠芬  李德文 《种子》2004,23(10):13-15

利用甘蓝型油菜隐性核不育杂交组合川油14中发现的不育株作母本、引进英国品种Bristal作父本杂交,F1代与中油821进行复合杂交,于后代中连续选择不育株与可育株兄妹交,获得稳定的两型系ZWAB.通过对其广泛测交,筛选出能完全保持其不育性的临时保持系和完全恢复的恢复系.临保不育系和恢复系配制的杂交种具有较强的杂种优势,有着良好的利用前景.  相似文献   

K型小麦雄性不育系诱导单倍体胚的胚胎学观察     

孙善英  杨天章  刘晚苟 《西北农林科技大学学报(自然科学版)》1993,21(4):18-25

从胚胎学方面研究了粘果山羊草细胞质的小麦雄性不育系K83(21)35A与保持系83(21)35B杂交的双受精过程,胚和胚乳的发育特点,以及单倍体胚和孪生胚发生的规律。结果表明:双受精过程、胚和胚乳的发育与普通小麦自交相似。n型单倍体胚来自助细胞的孤雌生殖;n-n型双胚来自助细胞和卵细胞的孤雌生殖;2n-n型双胚中的单倍体胚来自助细胞,二倍体胚来自受精卵。适当延迟授粉,能提高单倍体发生的频率。  相似文献   

大麦杂优利用中强优势组合的选择和恢复系恢复能力的研究     

周美学  黄志仁  许如根 《扬州大学学报(农业与生命科学版)》1995,(1)

利用新选育出的质核互作型雄性不育系和筛选出的恢复系配制杂种，研究了恢复系恢复基因的恢复能力，并从杂种后代表现讨论了强优势组合的选配应注意的问题。  相似文献   

小麦光敏不育系皖901S研究初报   总被引：2，自引：0，他引：2  

张少华  杨赞林 《安徽农业科学》1995,23(2):97-99

皖９０１５是安徽省农科院作物研究所发现并育成的一个新型光敏感型雄性不育系。该材料在合肥地区（Ｎ３１°５１°）短日低温条件下表现为全不育，在长日温暖条件下表现正常可育。在小麦正常发育的温度范围内，其育性转换过程随光周期的变化而发生，光周期对育性的影响远大于温度的影响。与其他类型雄性不育材料比较，皖９０１Ｓ通过长日条件下自交更易保持，且短日条件下育性表现稳定，雄性败育彻底，并能为大多数普通小麦品种所恢复。皖９０１Ｓ的两系杂种Ｆ１代优势明显，它的育成为小麦杂种优势利用开辟了一条新途径。  相似文献