Interspecific amphiploid-derived alloplasmic male sterility with defective anthers, narrow disc florets and small ray flowers in sunflower

被引：9

作者：

Liu, Zhao ^{[1
]}

Cai, Xiwen ^{[1
]}

Seiler, Gerald J. ^{[2
]}

Jan, Chao-Chien ^{[2
]}

机构：

[1] N Dakota State Univ, Dept Plant Sci, Fargo, ND 58108 USA

[2] USDA ARS, No Crop Sci Lab, Fargo, ND 58102 USA

来源：

PLANT BREEDING | 2014年 / 133卷 / 06期

关键词：

cytoplasmic male-sterility; maintainer; narrow disc; fertility restoration; CYTOPLASMIC MALE-STERILITY; FERTILITY RESTORATION GENE; PISTIL-LIKE STRUCTURES; TRANSCRIPT ACCUMULATION; HOMEOTIC TRANSFORMATION; MITOCHONDRIAL GENE; HYBRIDS; WHEAT; MUTANTS; STAMENS;

D O I：

10.1111/pbr.12216

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The cytoplasmic male-sterility (CMS)/fertility-restoration system is important for hybrid sunflower (Helianthus annuus L.) seed production. The objective of this study was to characterize two novel alloplasmic CMSs, designated CMS GRO1 and CMS MAX3, with defective anthers, narrow disc florets with no swollen corolla, and short, narrow ray flowers derived from two tetraploid amphiploids (AMPs). Among 26 tested lines, only AMP Helianthus cusickii/P 21 and HA 410 failed to restore male-fertility. Segregation of CMS, male-fertile plants and plants with reduced male-fertility was observed both in the testcross progeny of a six line half-diallel cross of F(1)s with CMS MAX3 and in an F-2 population of CMS GRO1xRHA 274. Male-fertility restoration was controlled by at least two dominant genes. Detailed analysis of the mitochondrial genes may provide insight into the differences between these CMSs and other CMS lines. The new CMSs will facilitate the studies of the incompatibility between cytoplasmic and nuclear genes, especially for the alloplasmic CMS involving perennial species, and also provide unique ornamental flower types and CMS sources for hybrid sunflower breeding.

引用

页码：742 / 747

页数：6

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