Cleistogamy method for broad beans and application thereof

Abstract

The invention relates to the breeding field of crops, in particular to broad bean. 8137 in the 8137 floral material cleistogamy technology studied in the project has special floral organ structure and is a rare cleistogamy type; the sizes of vexilla and carina of the 8137 are the same as those of a floral organ of a common broad bean plant, but ala of the 8137 is remarkably degraded and reduced and is only 20% of the floral organ of the common broad bean plant in size; and the degraded ala closely clasps the carina, in this way, a pollination vector insect cannot stays at the floral organ for collecting honey and getting pollen normally, and pollen is transmitted between flowers and between floral organs of the plants, so that outcrossing is caused. A cleistogamy material is provided with an 8137 floral organ structure; the technology using the 8137 material comprises genetic research, breed improvement and other applications. The cleistogamy character of the broad bean is not reported yet at home at present, and no application of the cleistogamy varieties and materials to the production exists. The new variety (kidney bean 8137) bred by the project has the cleistogamy character.

Description

[0001] technical field [0002] Vicia faba is the only cultivated species in the Fabaceae family. broad bean( Vicia faba ), the English name is Horsebean, Broadbean, Faba Bean, which is an annual herbaceous plant sown in spring or sown in autumn. Broad beans belong to the leguminosae (Leguminosae), Papilionoideae (Papilionoideae), broad bean family ( Vicia L . ). It is the best isolated species in this genus. Vicia and Vegetables ( Vicia L . ) There are no examples of successful hybridization among other species. Compared with other species in the genus Vicia, Vicia faba has larger chromosomes and a larger amount of DNA, but the number of chromosomes is less 2n=12, and other species 2n=14. [0003] Broad beans originated from Southwest Asia to the Mediterranean region, and are one of the oldest cultivated crops in the world, with a cultivation history of more than 4,000 years. The introduction of broad beans to Asia was the earliest in my country, and it was first i...

AI Technical Summary

Problems solved by technology

[0007] The pollination habit of broad bean species belongs to the type of heterogeneous flowers, and its outcrossing rate is between 25.75-56.14%, which requires that the species maintenance should be carried out under the condition of strictly controlling the pollen transfer, which provides great support for germplasm resource research and variety improvement technology projects. Breeding and production of improved varieties brings many difficulties, requiring large investment in technology and facilities

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