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Method for cultivating new germplasm of cowpeas

A new germplasm, cowpea technology, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of low level of genetic diversity and narrow genetic background of long cowpea, and achieve suitable pod length and good consistency. Effect

Inactive Publication Date: 2019-08-16
JIANGHAN UNIVERSITY
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Problems solved by technology

[0003] During the cultivation process, due to long-term artificial selection, the genetic diversity level of long cowpea is low, and the genetic background tends to be narrow, which is extremely unfavorable for long cowpea to cope with the complex and changeable ecological environment, and has become a potential disadvantage for the long cowpea industry. factor

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  • Method for cultivating new germplasm of cowpeas

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Embodiment

[0029] A kind of method utilizing cowpea (Vigna unguiculata) and rice bean (Vigna umbellata) distant hybridization, it is characterized in that comprising the following steps:

[0030] (1) Material preparation: choose a cowpea variety with excellent comprehensive properties as the female parent, select plump seeds without disease and pests as a candidate species; select rice bean materials with excellent comprehensive properties as the male parent;

[0031] (2) Material planting: Cowpea is sown in batches to ensure that the parents meet before flowering and have enough flower buds to carry out hybridization. Cowpea cultivated in the open field in Wuhan is sown in early April, and early June is the best pollination period.

[0032] (3) Cross-pollination of cowpea and rice bean: when both cowpea and rice bean are in flower, artificial hybridization is carried out from 6:00 am to 9:00 am. 25°C-30°C is the optimum temperature for flowering and pod formation, and also the optimum ...

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Abstract

The invention provides a method for cultivating new germplasm of cowpeas. The method comprises the following steps: 1) material preparation: rice bean and cowpea varieties with geographical distant relationship or genetic relationship as a male parent and a female parent respectively; 2) material planting: the cowpea variety and the rice bean variety are seeded in batches, and flower synchronization of the parents and sufficient flower buds for hybridization are ensured; 3) hybrid pollination of rice beans and cowpeas: when the cowpeas and the rice beans bloom, artificial hybridization is performed from early morning to forenoon; 4) systematic selection of multiple years and seasons on descendants obtained by hybridization. According to the method, a new cowpea strain with excellent yieldtraits such as pod color, pod length, seed coat color and single pod grain number is obtained by hybridizing the parents with geographical distant relationship or genetic relationship and combining breeding methods such as single plant systematic selection.

Description

technical field [0001] The invention belongs to the technical field of plant variety breeding, in particular to a method for cultivating new cowpea germplasm. Background technique [0002] Cowpea originated in Africa and is widely distributed all over the world. It has a long history of cultivation in the Sahara region, southeastern Asia and my country, and is also one of the main edible beans in my country. In our country, the cultivation is dominated by the pod-eating long cowpea. Its nutritional value and health value are high, rich in protein, carbohydrates, vitamin B and vitamin C, as well as calcium, phosphorus, iron, etc., especially the most abundant protein and vitamin B. my country is rich in cowpea resources. According to the records in the database of the National Crop Germplasm Resources Preservation Center of the Chinese Academy of Agricultural Sciences (http: / / icgr.caas.net.cn / ), there are currently more than 1,200 different types of cowpea germplasm material...

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 潘磊郭瑞王红波陈高邵景杰陈禅友
Owner JIANGHAN UNIVERSITY
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