Renong 1Ais a new indica CMS line with leaf color marker, developed by testcrossing and continuous backcrossing, using a spontaneous mutant with vires-cent-yel ow leaf isolated from the progenies of T98B /Jin 23B ...Renong 1Ais a new indica CMS line with leaf color marker, developed by testcrossing and continuous backcrossing, using a spontaneous mutant with vires-cent-yel ow leaf isolated from the progenies of T98B /Jin 23B ×Yixiang 1B as the male parent, and Fengyuan A as the female parent. Al the chlorotic leaves of Renong 1A turn green in later developmental stages from leaf tip to base. This is the reason why Renong 1A is a new ideal leaf color marker material in indica rice. It shows apparent and stable leaf marker trait, good agronomic traits, high outcross-ing rate, complete pol en sterility, fine grain quality and high combining ability. Renong 1A has already been technical y identified and certified by Hainan Provincial Crop Variety Appraisal Committee in 2013.展开更多
A light brown spotted-leaf mutant of rice was isolated from an ethane methyl sulfonate （EMS）- induced IR64 mutant bank. The mutant, designated as Ibsll （light brown spotted-leaf 1）, displayed light brown spot in t...A light brown spotted-leaf mutant of rice was isolated from an ethane methyl sulfonate （EMS）- induced IR64 mutant bank. The mutant, designated as Ibsll （light brown spotted-leaf 1）, displayed light brown spot in the whole growth period from the first leaf to the flag leaf under natural summer field conditions. Agronomic traits including plant height, growth duration, number of filled grains per panicle, seed-setting rate and 1000-grain weight of the mutant were significantly affected. Genetic analysis showed that the mutation was controlled by a single recessive gene, tentatively named Ibsll（t）, which was mapped to the short arm of chromosome 6. By developing simple sequence repeat （SSR） markers, the gene was finally delimited to an interval of 130 kb between markers RM586 and RM588. The Ibsll（t） gene is likely a novel rice spotted-leaf gene since no other similar genes have been identified near the chromosomal region. The genetic data and recombination populations provided will facilitate further fine-mapping and cloning of the gene.展开更多
通过EMS诱变籼稻品种IR64获得一个稳定遗传的淡褐色斑点叶突变体lbsl1(light brown spotted leaf 1)。在自然条件下,突变体播种后10～14d,叶片上出现淡褐色斑点,随后逐渐扩散至全叶,第1叶至剑叶上均有淡褐色斑,为全生育期性状。斑点性...通过EMS诱变籼稻品种IR64获得一个稳定遗传的淡褐色斑点叶突变体lbsl1(light brown spotted leaf 1)。在自然条件下,突变体播种后10～14d,叶片上出现淡褐色斑点,随后逐渐扩散至全叶,第1叶至剑叶上均有淡褐色斑,为全生育期性状。斑点性状的表达对株高、生育期、结实率和千粒重等农艺性状具有显著的影响。遗传分析结果表明,该淡褐色斑点叶性状受一个隐性核基因控制。将突变体lbsl1与正常叶色水稻Morobereken杂交构建F2定位群体,利用SSR标记,最终将该淡褐叶基因lbsl1(t)定位在第6染色体短臂上一个约130kb的区段上。定位的结果和发展的群体为该基因的进一步精细定位和克隆奠定了基础。展开更多
利用1 286对SSR标记和66对SFP标记对水稻转绿型新叶黄化突变体ygr和正常绿叶水稻品种日本晴(NBP)的基因组进行多态性研究。结果表明:1 236对SSR标记和63对SFP标记有扩增产物,扩增效率为96.08%;亲本间共筛选到248对SSR多态标记和12对SFP...利用1 286对SSR标记和66对SFP标记对水稻转绿型新叶黄化突变体ygr和正常绿叶水稻品种日本晴(NBP)的基因组进行多态性研究。结果表明:1 236对SSR标记和63对SFP标记有扩增产物,扩增效率为96.08%;亲本间共筛选到248对SSR多态标记和12对SFP多态标记,平均每条染色体有22对,多态检出率为19.23%;多态标记覆盖水稻基因组达1 626.2 c M,相邻多态标记间平均遗传距离为6.25 c M。不同类型标记间比较发现,SSR标记的多态检出率比SFP标记高1.1个百分点,两者相差不大。展开更多
基金Supported by National Nonprofit Institute Research Grant of CATAS-TCGRI(1630032014031)Natural Science Foundation of Hainan Province(313071)+2 种基金Scientific Research Fund for Outstanding Overseas Chinese Scholars(2013)Hunan Provincial Science and Technology Project,China(2013NK3037)Research Foundation of Education Bureau of Hunan Province(13C392)~~
文摘Renong 1Ais a new indica CMS line with leaf color marker, developed by testcrossing and continuous backcrossing, using a spontaneous mutant with vires-cent-yel ow leaf isolated from the progenies of T98B /Jin 23B ×Yixiang 1B as the male parent, and Fengyuan A as the female parent. Al the chlorotic leaves of Renong 1A turn green in later developmental stages from leaf tip to base. This is the reason why Renong 1A is a new ideal leaf color marker material in indica rice. It shows apparent and stable leaf marker trait, good agronomic traits, high outcross-ing rate, complete pol en sterility, fine grain quality and high combining ability. Renong 1A has already been technical y identified and certified by Hainan Provincial Crop Variety Appraisal Committee in 2013.
基金supported by the State Key Laboratory of Rice Biology (Grant No. ZZKT200801)the National High Technology Research and Development Program of China (Grant No. 2011AA10A101)Central Public Interest Research Institute Special Fund in China (Grant No. 2009RG001-2)
文摘A light brown spotted-leaf mutant of rice was isolated from an ethane methyl sulfonate （EMS）- induced IR64 mutant bank. The mutant, designated as Ibsll （light brown spotted-leaf 1）, displayed light brown spot in the whole growth period from the first leaf to the flag leaf under natural summer field conditions. Agronomic traits including plant height, growth duration, number of filled grains per panicle, seed-setting rate and 1000-grain weight of the mutant were significantly affected. Genetic analysis showed that the mutation was controlled by a single recessive gene, tentatively named Ibsll（t）, which was mapped to the short arm of chromosome 6. By developing simple sequence repeat （SSR） markers, the gene was finally delimited to an interval of 130 kb between markers RM586 and RM588. The Ibsll（t） gene is likely a novel rice spotted-leaf gene since no other similar genes have been identified near the chromosomal region. The genetic data and recombination populations provided will facilitate further fine-mapping and cloning of the gene.
文摘通过EMS诱变籼稻品种IR64获得一个稳定遗传的淡褐色斑点叶突变体lbsl1(light brown spotted leaf 1)。在自然条件下,突变体播种后10～14d,叶片上出现淡褐色斑点,随后逐渐扩散至全叶,第1叶至剑叶上均有淡褐色斑,为全生育期性状。斑点性状的表达对株高、生育期、结实率和千粒重等农艺性状具有显著的影响。遗传分析结果表明,该淡褐色斑点叶性状受一个隐性核基因控制。将突变体lbsl1与正常叶色水稻Morobereken杂交构建F2定位群体,利用SSR标记,最终将该淡褐叶基因lbsl1(t)定位在第6染色体短臂上一个约130kb的区段上。定位的结果和发展的群体为该基因的进一步精细定位和克隆奠定了基础。
文摘利用1 286对SSR标记和66对SFP标记对水稻转绿型新叶黄化突变体ygr和正常绿叶水稻品种日本晴(NBP)的基因组进行多态性研究。结果表明:1 236对SSR标记和63对SFP标记有扩增产物,扩增效率为96.08%;亲本间共筛选到248对SSR多态标记和12对SFP多态标记,平均每条染色体有22对,多态检出率为19.23%;多态标记覆盖水稻基因组达1 626.2 c M,相邻多态标记间平均遗传距离为6.25 c M。不同类型标记间比较发现,SSR标记的多态检出率比SFP标记高1.1个百分点,两者相差不大。
