Grain Legumes Research Program, International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Hyderabad 502 324, Andhra Pradesh, India.
J Hered. 2012 Mar-Apr;103(2):297-302. doi: 10.1093/jhered/esr125. Epub 2011 Dec 20.
The chickpea (Cicer arietinum L.) is a self-pollinated grain legume with cleistogamous flowers. A spontaneous open-flower mutant, designated OFM-3, was identified in which reproductive organs were not enclosed by the keel petals and thus remained exposed. All 10 stamens in this mutant were free, whereas these are in diadelphous (9 fused + 1 free) condition in normal chickpea flowers. A large number of pods (73%) remained unfilled (empty) in OFM-3, though its pollen fertility was as high as the standard cultivars. The open-flower trait was found to be recessive and controlled by a single gene. OFM-3 was crossed with earlier reported open-flower mutants, ICC 16341 and ICC 16129, to establish trait relationships of genes controlling open flower traits in these mutants. It was found that each of these mutants has a unique gene for open flower trait. The genes controlling open flower trait in ICC 16341, ICC 16129, and OFM-3 were designated ofl-1, ofl-2, and ofl-3, respectively. Breeding lines with open flower trait and higher percentage of filled pods have been developed from the progenies of the crosses of OFM-3 with normal-flowered lines. The open flower trait offers opportunity for exploring hybrid technology in the chickpea.
鹰嘴豆（Cicer arietinum L.）是一种自花授粉的豆科作物，具有闭花授粉的特性。在该作物中鉴定到一个自发的开花突变体，命名为 OFM-3，其生殖器官没有被龙骨花瓣包裹，因此仍然暴露在外。在这个突变体中，所有 10 个雄蕊都是自由的，而在正常鹰嘴豆花中，这些雄蕊处于二体雄蕊（9 个合生+1 个自由）的状态。尽管 OFM-3 的花粉育性与标准品种一样高，但大量的豆荚（73%）仍然没有填满（空的）。开花特性被发现是隐性的，由单个基因控制。OFM-3 与之前报道的开花突变体 ICC 16341 和 ICC 16129 杂交，以确定这些突变体中控制开花特性的基因之间的关系。结果发现，这些突变体中的每一个都有一个独特的基因控制开花特性。ICC 16341、ICC 16129 和 OFM-3 中控制开花特性的基因分别命名为 ofl-1、ofl-2 和 ofl-3。从 OFM-3 与正常花系杂交的后代中，已经选育出具有开花特性和更高填充豆荚比例的开花系。开花特性为探索鹰嘴豆的杂交技术提供了机会。
