干旱地区农业研究
榦旱地區農業研究
간한지구농업연구
AGRICULTURAL RESEARCH IN THE ARID AREAS
2013年
5期
110-116,206
,共8页
范惠玲%王文倩%李彦龙%白生文
範惠玲%王文倩%李彥龍%白生文
범혜령%왕문천%리언룡%백생문
芸芥%自交不亲和系%S等位基因%基因表达%DDRT-PCR
蕓芥%自交不親和繫%S等位基因%基因錶達%DDRT-PCR
예개%자교불친화계%S등위기인%기인표체%DDRT-PCR
Eruca sativa Mill.%self-incompatible lines%Salleles%gene expression%DDRT-PCR
在利用芸芥自交不亲和系途径开展育种研究的过程中,为了避免在人工试配组合时,双亲蕾期杂交结籽率较好,但在自然隔离条件下配制杂交种时出现双亲花期交配不亲和的现象,本试验对10份芸芥进行了系内株间和系间的完全双列杂交,同时对自交不亲和基因的表达器官进行了DDRT-PCR扩增研究。结果表明,芸芥1、芸芥3、芸芥5、芸芥6、芸芥8、芸芥9和芸芥13这7份材料系内株间异交和套袋自交的亲和指数均小于1,即表现为不亲和性,说明这些材料属于S等位基因纯合的不亲和系;而芸芥2、芸芥4和芸芥10这三份材料系内株间异交和套袋自交时,呈现出不亲和性不稳定的现象,即一部分杂交表现为亲和,另一部分杂交表现为不亲和,说明这3份材料的自交不亲和性尚未稳定。DDRT-PCR扩增结果表明,芸芥自交不亲和S基因只在柱头组织中表达,其属于组织特异性表达。因此,在利用自交不亲和系途径培育一代杂种时,在农艺学性状和自交不亲和性基本稳定时,有必要进一步测定自交不亲和系S等位基因的纯合性和基因型,这一工作可以有效地指导育种实践。
在利用蕓芥自交不親和繫途徑開展育種研究的過程中,為瞭避免在人工試配組閤時,雙親蕾期雜交結籽率較好,但在自然隔離條件下配製雜交種時齣現雙親花期交配不親和的現象,本試驗對10份蕓芥進行瞭繫內株間和繫間的完全雙列雜交,同時對自交不親和基因的錶達器官進行瞭DDRT-PCR擴增研究。結果錶明,蕓芥1、蕓芥3、蕓芥5、蕓芥6、蕓芥8、蕓芥9和蕓芥13這7份材料繫內株間異交和套袋自交的親和指數均小于1,即錶現為不親和性,說明這些材料屬于S等位基因純閤的不親和繫;而蕓芥2、蕓芥4和蕓芥10這三份材料繫內株間異交和套袋自交時,呈現齣不親和性不穩定的現象,即一部分雜交錶現為親和,另一部分雜交錶現為不親和,說明這3份材料的自交不親和性尚未穩定。DDRT-PCR擴增結果錶明,蕓芥自交不親和S基因隻在柱頭組織中錶達,其屬于組織特異性錶達。因此,在利用自交不親和繫途徑培育一代雜種時,在農藝學性狀和自交不親和性基本穩定時,有必要進一步測定自交不親和繫S等位基因的純閤性和基因型,這一工作可以有效地指導育種實踐。
재이용예개자교불친화계도경개전육충연구적과정중,위료피면재인공시배조합시,쌍친뢰기잡교결자솔교호,단재자연격리조건하배제잡교충시출현쌍친화기교배불친화적현상,본시험대10빈예개진행료계내주간화계간적완전쌍렬잡교,동시대자교불친화기인적표체기관진행료DDRT-PCR확증연구。결과표명,예개1、예개3、예개5、예개6、예개8、예개9화예개13저7빈재료계내주간이교화투대자교적친화지수균소우1,즉표현위불친화성,설명저사재료속우S등위기인순합적불친화계;이예개2、예개4화예개10저삼빈재료계내주간이교화투대자교시,정현출불친화성불은정적현상,즉일부분잡교표현위친화,령일부분잡교표현위불친화,설명저3빈재료적자교불친화성상미은정。DDRT-PCR확증결과표명,예개자교불친화S기인지재주두조직중표체,기속우조직특이성표체。인차,재이용자교불친화계도경배육일대잡충시,재농예학성상화자교불친화성기본은정시,유필요진일보측정자교불친화계S등위기인적순합성화기인형,저일공작가이유효지지도육충실천。
In the process of breeding research by ways of self-incompatible lines in E . Sativa Mill .,there is often a phenomenon that the seed setting percentage from the cross of two parents is high in bud stage ,but the number of seeds is low in late stage owing to the natural segregation .By using the method of complete diallel crossing ,the purity of S al-leles in 10 self-incompatible lines of E . Sativa Mill .was studied ,and the expression tissue of self-incompatible genes was analyzed with DDRT -PCR technique .The results showed that the self-compatible index of Yunjie 1 ,Yunjie 3 , Yunjie 5 ,Yunjie 6 ,Yunjie 8 ,Yunjie 9 and Yunjie 13 was below 1 after selfing or outcrossing among these 7 self-incom-patible lines ,that is to say ,their self-incompatibility was stable .However ,the self-incompatibility of Yunjie 2 ,Yunjie 4 and Yunjie 10 was not stable .DDRT-PCR analysis showed that the self-incompatible genes of E .Sativa Mill .didn’ t belong to constitutive expression ,but to specific tissue expression .Therefore ,when creating F1 hybrids by ways of self-incompatible lines ,it is necessary for us to determinate the purity of S alleles and their genotypes besides agronomic traits and self-incompatible stability .