Cowpea isolation hybridization pollination method
A technology for hybrid pollination and cowpea is applied in the field of isolated hybrid pollination of cowpea, which can solve the problems of bright color and large flowers, and achieves the effects of simple operation, reduction of false hybridization rate, and avoidance of self-crossing and natural hybridization.
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Embodiment 1
[0013] Select suitable male parent and female parent to sow in the nutrient bowl respectively: select Chengjue No. 3 as the male parent and Zhiqing No. 3 as the female parent, because the seed coat of Chengjue No. 3 is black, and the seeds of Zhiqing No. 3 are red. Black is dominant relative to reddish brown, so the seed coat can be used as a marker trait. The pods produced by the first generation of hybridization should be black in seed color, which is easy to investigate the hybridization rate; transplanting, mulching, hole spacing 40cm, 2 plants per hole, management General production; during the flowering period, pollinate the healthy flower buds 1-3 days before flowering before 11:00 every day; investigate the hybridization rate after harvesting.
[0014] A, non-emasculated stigma isolation hybridization: select cowpea male parent and female parent with excellent traits, sowing and management are the same as general production; before 12 o'clock in the morning every day du...
Embodiment 2
[0021] Chengjue No. 3 was selected as the male parent, and Tezao 30 was selected as the female parent. The sowing and management were the same as in general production; during the flowering period, the strong flower buds 1-3 days before flowering were pollinated by emasculated and non-emasculated stigma hybridization methods; Afterwards, the hybridization rate was investigated.
[0022] Table 2 Effect of different pollination methods on pod setting rate of Tezao 30×Chengjue 3
[0023] different pollination methods
[0024] The experimental results showed that the pod setting rate, pod index and hybridization rate of non-emasculated stigma hybridization method were better than those of emasculated hybridization method.
Embodiment 3
[0026] Select the male parent and female parent with excellent traits, sowing and management are the same as general production; during the flowering period, the non-emasculating stigma isolation hybridization method is used to pollinate the robust flower buds 1 day before flowering, 2 days before flowering, and 3 days before flowering; The hybridization rate was investigated after harvesting. The results are shown in Table 3. The highest pod setting rate was 1 day before flowering, up to 20.37%, which was 42.54% higher than the previous 2 days, and 322.61% higher than the previous 3 days; followed by the first 2 days, the pod setting rate was 14.29%. , 196.47% higher than the previous 3 days; the lowest pod setting rate was pollination 3 days before flowering, only 4.82%. It shows that different pollination time is one of the important factors affecting the pod setting rate, and the best time is 1 day before flowering.
[0027] Table 3. Effect of different pollination time o...
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