Production of peanut hybrid seeds in an intersectional cross through post-pollination treatment of flower bases with plant growth regulators

文献类型： 外文期刊

第一作者： Wang, Chuan Tang

作者： Wang, Chuan Tang;Yu, Hong Tao;Wang, Xiu Zhen;Tang, Yue Yi;Wu, Qi;Song, Guo Sheng;Yu, Shan Lin;Gao, Hua Yuan;Hu, Dong Qing;Chen, Jian Hong

作者机构：

关键词： Hormone treatment;In vitro technique;Intersectional hybrid;Peanut;Seed development;Wild species

期刊名称：PLANT GROWTH REGULATION （ 影响因子：3.412； 五年影响因子：3.691 ）

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年卷期：

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收录情况： SCI

摘要： To broaden the narrow gene base of the cultivated peanut and utilize sources of resistance to abiotic/biotic stresses, quality-related traits and high yielding factors, much attention has been paid to wild relatives of the oilseed crop since 1980s. Species outside section Arachis are cross-incompatible with A. hypogaea L.; even some of the species from section Arachis, which are supposed to be compatible, may also encounter obstacles when crossed with the peanut cultigen. The objective of the present communication is to study the effects of simple hormone treatment on production of true incompatible hybrids in peanut to replace the tedious and lengthy in vitro embryo rescue procedures currently in use. In the incompatible cross, A. hypogaea cv Qunyu 101 × A. paraguariensis, post-pollination application of a hormone aqueous solution (IAA 4 mg/L + GA 2 mg/L) at flower bases resulted in 42 seeds, of which 26 were identified as true hybrids by allele-specific PCR for FAD2A genotyping. As a desirable alternative to in vitro embryo/ovules/peg culture, the present method may facilitate the utilization of wild species in peanut breeding. The method described here for peanut may be of reference to other crop plants where embryo abortion is also a problem.

分类号： S311

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