Hybrid breeding method for pumpkin

A hybrid breeding and zucchini technology, applied in the directions of botanical equipment and methods, applications, and plant genetic improvement, can solve problems such as insufficient light, limitation, and unreachable daily accumulated temperature.

Inactive Publication Date: 2010-12-08
COTTON RES INST SHANXI ACAD OF AGRI SCI
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Problems solved by technology

Greenhouse addition can speed up the process of hybrid combination comparison, but due to insufficient light and daily accumul...

Method used

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  • Hybrid breeding method for pumpkin
  • Hybrid breeding method for pumpkin
  • Hybrid breeding method for pumpkin

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Taking the breeding of a new zucchini variety Donghu No. 2 as an example, it will be described in detail.

[0019] Breeding goal determination: through the introduction of foreign excellent hybrids, or hybridization of inbred lines and local excellent early-maturing resources, self-crossing homozygosity is adopted, and high-quality genes are accumulated, recombined, and directional gathered according to the genetic law of leaf color indicating shape and melon color Excellent genes, selected and bred new zucchini varieties that not only retain the early maturity of domestic varieties, but also have the characteristics of foreign varieties that do not decline in the later stage, good commerciality, and high yield.

[0020] Collection of raw materials: Excellent foreign hybrids: French Dongyu, Seoul Early Maturity, domestic early maturity...

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Abstract

The invention discloses a hybrid breeding method for pumpkin by annual three generations, which is characterized in that: combinations are configured in a breeding field in spring of the first year, the combinations are preliminarily screened in the breeding field in autumn, and the enlargement and small-area seed production are performed on selected excellent combined parents in Hainan province in winder; the combining ability is determined in the breeding field in spring of the next year, variety comparison experiments are protectively performed in winter, and the enlargement and small-areaseed production of pioneer combined parents are continued in Hainan province in winder; the variety comparison experiments are continued in spring and autumn of the third year so as to select the optimal hybrid; the female parent is an inbred line 02-8A bred by performing seven generations of homozygous inbreeding on a hybrid winter jade according to an inbred line breeding method by annual threegenerations; and the male parent is an early-matured inbred line with a code number of 9601-4B obtained by hybridizing stable green-peel inbred line (with the code number of SQ96) selected by early-matured inbreeding separation in Seoul in spring in 2000 with a Chinese resource Heilongjiang small white-peel inbred line (with the code number of B) and performing four generations of homozygous inbreeding according to a female parent breeding method.

Description

technical field [0001] The invention relates to the technical field of hybrid breeding, in particular to a three-generation hybrid breeding method of zucchini anniversary. Background technique [0002] At present, zucchini is produced using first-generation hybrid seeds, so the breeding of new varieties is mainly done through heterosis breeding. Heterosis refers to the phenomenon that the hybrids produced by the hybridization of organisms with different genetic compositions are superior to their parents in terms of growth vigor, stress resistance, adaptability and yield. Large-scale use of heterosis in agriculture began in the 1930s, when hybrid corn was first applied to production and developed rapidly. In today's world, the use of heterosis in field crops, vegetables, fruit trees, flowers, forest trees, and breeding animals is becoming more and more extensive. [0003] The characteristic of heterosis breeding is "purity first and then hybridization". The general procedur...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01G1/00A01H1/04
Inventor 雷逢进聂安全王晓民卫爱兰杨淑巧康新茸裴贞杨芬
Owner COTTON RES INST SHANXI ACAD OF AGRI SCI
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