野栽杂交选育功能叶耐衰老新种质  

Breeding the new functional leaves senescence-tolerant germplasm using interspecific hybrid

作　　者：金海芳 张维林[1] 王涛[1] 杨玲[1] JIN Haifang;ZHANG Weilin;WANG Tao;YANG Ling(Zhejiang Provincial Key Laboratory of Biotechnology on Specialty Economic Plants,Zhejiang Normal University,Jinhua 321004,China)

机构地区：[1]浙江师范大学浙江特色经济植物生物技术研究重点实验室,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2021年第1期64-68,共5页Journal of Zhejiang Normal University:Natural Sciences

基　　金：浙江省自然科学基金资助项目(LY20C130002);杂交水稻国家重点实验室(武汉大学)开放课题基金项目(KF201807)。

摘　　要：通过药用野生稻和栽培稻93-11远缘杂交、胚拯救培养、F1植株幼穗离体培养、回交及目标性状选择等方法,发掘药用野生稻功能叶耐衰老特性和将此性状向栽培稻转移.结果表明:药用野生稻在金华仍具有较好的功能叶耐衰老特性;药用野生稻光合特性并不优于栽培稻93-11;野栽杂交后代F2植株可结实;BC2F2群体中一份株系的功能叶耐衰老.研究实现了药用野生稻功能叶耐衰老优异基因的发掘和转移,为分离克隆功能叶耐衰老基因提供遗传资源.To explore the characteristic of the senescence-tolerance of functional leaves in wild rice(Oryza officinalis)and to transfer the elite trait to O.sativa L.ssp.indica cultivar,interspecific hybrid between O.officinalis and the cultivar 93-11,embryo rescue technique,regeneration of young panicles from F1 hybrid,recurrent backcrossing and selection were performed.As anticipated,the O.officinalis still shows the excellent characteristic of the senescence-tolerance of functional leaves in Jinhua,the O.officinalis displays no better photosynthetic characteristics than 93-11 does.The F2 is self-fertile and one rice line from BC2F2 population shows the senescence-tolerant trait of functional leaves.In this study,the senescence-tolerant gene(s)of functional leaves in O.officinalis was transferred to cultivar,which provides genetic resource for identifying the senescence-tolerant gene(s)of functional leaves in O.officinalis.

关 键 词：药用野生稻 栽培稻 功能叶 耐衰老 

分 类 号：Q321.3[生物学—遗传学]