Efficient broad bean hybrid breeding method

Abstract

The invention discloses an efficient broad bean hybrid breeding method which comprises the steps of: 1, castrating: selecting a hybrid flower, clamping the top end of vexil and a connecting part of the vexil and flower base by using a nipper from one semicircular arc side of the vexil, and slightly clamping and completely extracting petals, wherein an included angle of the nipper and the flower back line is 30 DEG; 2, pollinating: pollinating in the same day or on the next day at 12-16 o'clock, selecting a male parent flower dispersing pollen or just dispersing pollen, clamping pollen particles subjected to just pollen dispersing, and coating the pollen particles on an exposed stigma of the female parent flower; 3, sleeving; and 4, pruning. The petals are clamped and completely pulled out by using the nipper, hybridization castration speed is high, the stigma is not damaged and is exposed so as to be convenient for pollinating; after the castration is finished, the female parent flower has no petals and anthers without inducing insects, isolation measures do not need to be taken, and the defects of secondary damage and the like caused to the female parent flower by adopting the isolation measures are avoided after the pollination is finished, therefore, working efficiency and hybridization fruiting success rate are both superior to that of the traditional method.

Description

technical field [0001] The invention relates to a broad bean hybrid breeding method. Background technique [0002] Because the seed-setting rate of broad bean is generally low, in order to obtain a certain number of hybrid seeds in cross-breeding of broad bean, it is necessary to do more number of hybrid flowers. In the process of broad bean cross breeding, detasseling is one of the important steps. In the past, until now, some scientific research institutions at home and abroad still adopt the traditional method of smearing pollen on the pistil stigma after selecting suitable hybrid flowers, using tweezers to remove the flag petals, wing petals and keel petals, and then taking out ten anthers one by one. Broad bean emasculation hybrid breeding method. After emasculation and pollination, it needs to be isolated with a net cover to prevent insects such as bees and thrips from pollinating. This method has low efficiency of emasculation and hybridization, and is likely to ca...

AI Technical Summary

Problems solved by technology

This method has low efficiency of emasculation and hybridization, and it is easy to cause consequences such as incomplete emasculation, easy damage to the stigma of the female parent during emasculation and pollination, resulting in failure of hybridization

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