No-shell India pumpkin parent and variety breeding method

Abstract

The invention relates to a method for breeding seed shell-less winter squash parents and varieties, which comprises: performing generation increasing purification on the collected seed winter squash variety source; performing hybridization on different homozygous lines with far geo-relationship after generation increasing purification, adopting plasma physical mutagen, namely nitrogen ions with dosage between 2,500 and 3,000 Rad for treatment, and inducing a seed winter squash variety for mutation; performing multi-generation planting purification and test cross assay on selected mutated seed shell-less winter squash mutants to find seed shell-less winter squash mutants of which hereditary characters are controlled by a recessive single gene; and breeding serial seed shell-less seed winter squash parents through hybridization and backcross of the selected seed shell-less winter squash mutants and a great number of seed winter squash parents with seed shells, and utilizing hybridization of the bred parents to breed seed shell-less winter squash hybrid varieties. The method realizes identifying the truth of seed shell-less winter squash seeds in appearance quickly, simply, intuitively and accurately, contributes to seed market protection and guarantees the quality of the seeds.

Description

technical field [0001] The invention relates to a breeding method of Indian squash parents and varieties without seed shells. Background technique [0002] Pumpkin is one of the earliest ancient crops cultivated by humans. There are many types and varieties of pumpkins, and the shapes, sizes, and qualities of fruits are different, and the colors are colorful. The characteristics of diversity among cultivated plants are very prominent. Pumpkin has strong disease resistance and stress resistance, wide adaptability, high yield, easy cultivation, and storage resistance of mature fruits. It is widely planted in various parts of our country. [0003] In Northeast my country, Northwest China, North China and other regions, the annual cultivation area of ​​pumpkin for seeds is nearly 3-5 million mu, which is mainly aimed at harvesting pumpkin seeds, and it is a major local economic crop. With the development of my country's economy and the continuous improvement of people's living ...

AI Technical Summary

Problems solved by technology

Consumers have a great demand for shelled pumpkin kernels, and all the pumpkin kernels sold in the market are obtained by manual peeling, and the cost is very high

[0004] At present, the production of pumpkin seeds in my country still mostly has seed shells, and there are also a small amount of varieties that use seedless shells (naked kernels) Chinese pumpkin (Cucurbit moschata) and seedless shells (naked kernels) zucchini (Cucurbit pepo) to produce seedless shells ( naked kernel) pumpkin seeds, but the seeds are generally small, and the export profit is not high

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