Method for widening the cell hereditable basic of cultivated soybeans using wild soybeans

A technology for cultivating soybeans and wild soybeans, which is applied in the directions of botanical equipment and methods, applications, and plant genetic improvement to achieve the effect of broadening the genetic basis and stabilizing beneficial traits

Inactive Publication Date: 2004-09-01
CHENGDE YINGZE SEED SCI & TECH DEV
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Problems solved by technology

[0003] After retrieval by the Science and Technology Documentation Center of the Chinese Academy of Agricultural Sciences, China AGRIS North China Branch Center, and the Information Research Institute of the Hebei Provincial Academy of Agricultural Sciences, the research literature on wild soybeans was searched. Agriculture and Animal Husbandry Information Research", 1982, No. 20, p. 51) used wild soybean as the female parent

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  • Method for widening the cell hereditable basic of cultivated soybeans using wild soybeans
  • Method for widening the cell hereditable basic of cultivated soybeans using wild soybeans

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[0052] Example 1

[0053] (1) Obtain F1 true hybrids with wild soybean as the female parent

[0054] In 1984, the high-protein Guxin wild soybeans were planted and the flowering period was observed. The Guxin wild soybeans from southern Hebei showed late maturity in Chengde, northern Hebei, and began to bloom on August 20, and all spring soybeans All the varieties have bloomed, and the pollination and hybridization work has not been completed. It was sown again in 1985, and 20 days of short-day treatment was carried out after the emergence of the seedlings. It was shaded from 5 pm to 8 o’clock the next day, so that it bloomed on June 23, which was 57 days earlier than natural conditions, creating a hybrid condition. In order to reduce the plant height and increase the high yield of the offspring of interspecific hybrids, a limited plant height of 60 cm and good yield of Chengdou No. 1 was selected as the male parent for crosses. One F0 seed was obtained after autumn.

[0055] In t...

Example Embodiment

[0059] Example 2

[0060] In order to verify the reproducibility of the successful hybridization of wild soybeans as female parent and cultivated soybean, Kongqiao wild soybeans were used as female parent in 1994. After 18 days of short-day treatment, after flowering, henan soybeans with limited size and large grains were used as male parent. The hybridization was successful again. The combination number 9441, F1 and F2 were all crossed in a broad sense. The F3 substitute Zhongpin 661 was also crossed in a broad sense to obtain 5 F0 seeds, the combination number 9718. In the future, 9718F4 and 9441-7 will be used as female parent, and multiple cultivated soybeans such as Yudou 18, Chengdou 5, Zhongpin 5016, Yudou 12, Wuyi Yan Zhongying soybeans, Jiqing No. 1, 9039-1-8= The 1st class has carried out generalized hybridization work and has obtained a batch (204 in 10 combinations) of interspecific hybrid progeny materials with thick stems, large grains and wild soybean cytoplasm. Thi...

Example Embodiment

[0061] Example 3

[0062]In order to broaden the genetic basis of cultivated soybean cytoplasm and suggest the reason and mechanism of the narrow and single cytoplasmic genetic basis of cultivated soybean in my country, in 1995, wild soybean Xinmin 6 was used as the parent, and the four cultivated soybean Hefeng 25 and Tongnong 10 were used as parents. For 8412 and Kai 8157 soybeans, 4 pairs of cross-crossing experiments were carried out. From 1996 to 1998, the separation of main agronomic traits and maternal effects of the F1, F2, and F3 generations of cross-crossing experiments were carefully observed and analyzed.

[0063] The test results show that: plant height has a very significant maternal effect (up to 0.01% significant). The number of main stem nodes and the number of pods per plant also have maternal effects. The number of seeds per plant has a significant maternal effect, reaching 0.05% significant. The last pair of 100-seed weights shows maternal effect. The first 3 p...

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Abstract

The invention is characterized by that, wild soybeans are used as female parent, the first generation cultivated soybeans are used as the male parent for cross-breeding, then hybrid seed selection is carried out between the different generation material of the filial generation and the second generation cultivated soybeans, the advantages of the invention are expanded cytoplasmic inheritance basis for soybean cultivation, higher output of seed, increased protein content, lower insect eating rate and better agricultural property.

Description

[technical field] [0001] The invention relates to the field of crop genetics and breeding, in particular to the technical field of wild soybean cytoplasm utilization in soybean germplasm innovation. [Background technique] [0002] At present, the genetic basis of soybean varieties is becoming narrower and narrower. In order to change this situation, breeders are trying to broaden the genetic basis of cultivated soybeans. Wild soybean has high protein content and strong stress resistance. It has become an important germplasm resource for broadening the genetic basis of cultivated soybean, and has attracted the attention and utilization of many breeders. However, it is generally believed that wild soybeans are not easy to overcome the shortcomings of creeping lodging, pod splitting, small grains, thin stems, and dark seed coats. At the same time, because the ovary and embryo capsule of wild soybean are very small, it is generally not easy to succeed in hybridization with cult...

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Application Information

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IPC IPC(8): A01H1/02
Inventor 李玉清
Owner CHENGDE YINGZE SEED SCI & TECH DEV
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