贵州农业科学
貴州農業科學
귀주농업과학
GUIZHOU AGRICULTURAL SCIENCES
2014年
9期
18-20,24
,共4页
水稻三系不育系%柱头外露率%遗传相似性
水稻三繫不育繫%柱頭外露率%遺傳相似性
수도삼계불육계%주두외로솔%유전상사성
rice%sterile line%stigma exsertion rate%genetic similarity
为对新育成的9个水稻三系不育系的后续优势组合组配和潜在利用价值研究提供参考，测定了其部分农艺性状及异交性状，选用平均分布在12条染色体上的84对SSR引物对其遗传相似性进行了分析。结果表明：各不育系的各性状表现一般，开花习性表现较好，筛选不育系时可以开花性状表现为主，农艺性状表现为辅进行选择；不育系914A、915A 综合性状表现较为突出，柱头外露率分别为82．92％和73．24％，异交结实率分别为12．23％和11．80％；9个不育系间的遗传相似系数为0．542289～0．781095，在遗传相似性系数0．78左右，各不育系可以相互区分。初步判断不育系间差异明显，异质性较丰富，具备一定的遗传潜势。
為對新育成的9箇水稻三繫不育繫的後續優勢組閤組配和潛在利用價值研究提供參攷，測定瞭其部分農藝性狀及異交性狀，選用平均分佈在12條染色體上的84對SSR引物對其遺傳相似性進行瞭分析。結果錶明：各不育繫的各性狀錶現一般，開花習性錶現較好，篩選不育繫時可以開花性狀錶現為主，農藝性狀錶現為輔進行選擇；不育繫914A、915A 綜閤性狀錶現較為突齣，柱頭外露率分彆為82．92％和73．24％，異交結實率分彆為12．23％和11．80％；9箇不育繫間的遺傳相似繫數為0．542289～0．781095，在遺傳相似性繫數0．78左右，各不育繫可以相互區分。初步判斷不育繫間差異明顯，異質性較豐富，具備一定的遺傳潛勢。
위대신육성적9개수도삼계불육계적후속우세조합조배화잠재이용개치연구제공삼고，측정료기부분농예성상급이교성상，선용평균분포재12조염색체상적84대SSR인물대기유전상사성진행료분석。결과표명：각불육계적각성상표현일반，개화습성표현교호，사선불육계시가이개화성상표현위주，농예성상표현위보진행선택；불육계914A、915A 종합성상표현교위돌출，주두외로솔분별위82．92％화73．24％，이교결실솔분별위12．23％화11．80％；9개불육계간적유전상사계수위0．542289～0．781095，재유전상사성계수0．78좌우，각불육계가이상호구분。초보판단불육계간차이명현，이질성교봉부，구비일정적유전잠세。
The part agronomic and outcross characters of 9 new sterile lines were determined and the genetic similarity of 9 new sterile lines was studied by analyzing 84 pairs of SSR primers averagely distributed on 1 2 chromosomes to provide a reference for their superiority combination and potential utilization value in rice.The results showed that:1 )Performance of different agronomic characters of 9 sterile lines is common but their flowering habit is good.Therefore,good sterile lines should be selected according to the flowering habit mainly and then performance of agronomic characters ;2 )The stigma exsertion rate and outcross rate of 914A and 915A lines with good integrated characters are 82.92% and 12.23%,and 73.24% and 11.80% respectively;3)The genetic similarity coefficient between 9 sterile lines is 0.542 289~0.781 095 and 9 sterile lines can be differentiated when the genetic similarity coefficient is about 0.78.In conclusion,9 new sterile lines are of the certain genetic potential because there is abundant heterogeneity among 9 sterile lines.
