Seed breeding method for keeping spring sowing ecotype soybean variety seed nature stability

An ecotype and seed technology, applied in the directions of botanical equipment and methods, applications, and plant genetic improvement, can solve problems such as shortened growth period, low seed yield, and decreased 100-grain weight, and achieve improved germination rate and improved germination rate. , the effect of enhancing vitality

Active Publication Date: 2017-06-30
SHANGHAI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, summer sowing not only causes serious rotten seeds, but also reduces the size of the plants, shortens the growth period, reduces the 100-grain weight, and significantly lowers the seed yield; moreover, long-term summer sowing and autumn multiplication will also lead to serious degradation of seed quality

Method used

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  • Seed breeding method for keeping spring sowing ecotype soybean variety seed nature stability
  • Seed breeding method for keeping spring sowing ecotype soybean variety seed nature stability
  • Seed breeding method for keeping spring sowing ecotype soybean variety seed nature stability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] The quality comparison of the soybean seeds that embodiment 1 tropics or subtropical area spring sowing greenhouse plantation obtains

[0085] In this experiment, the spring-sowed eco-type extra-early-maturing soybean variety "Qingsu No. 2" was used as the representative variety of spring-sowed eco-type soybean varieties, and the soybean seeds obtained according to the following experimental methods were used as the experimental group. the S 0 The generation seeds were used as the control group, and the harvesting time of the experimental group and the control group were recorded respectively, and the 100-grain weight, germination rate and yield per mu of the seeds obtained by different breeding methods were measured. See Table 1 for specific data. The determination method of the seed germination rate is determined according to the national standard GB / T 5520-2011 "Grain Germination Test for Grain and Oil Inspection".

[0086] Experimental method: From February 10th to...

Embodiment 2

[0093] (1) From February 15th to 20th in Shanghai and its surrounding areas, sow the breeder seeds of the early and mid-maturing soybean variety "Qingsu No. 5" in spring sowing in a 6-meter standard span with insect-proof isolation nets installed, Before sowing, apply 18kg of nitrogen, phosphorus and potassium compound fertilizer (N:P:K mass ratio is 15:15:15) as the base fertilizer, and the soil is deeply plowed and raked to make a small high bed with a height of 20cm and a width of 250cm. Water the soil with enough bottom water. The method of hole sowing is adopted, and 3 seeds are sown in each hole, the hole depth is 2.5cm, the hole distance is 24cm, the row spacing is 29cm, and the seeding rate per mu is 3kg. After sowing, each hole is covered with 1.8cm thick fine soil, the surface is covered with a layer of plastic film, and the surrounding area of ​​the plastic film is pressed tightly. After the seeds germinate and emerge, the surface film is broken to expose the seedl...

Embodiment 3

[0097] Example 3 Comparison of the quality of the original species of spring-sowed ecological soybean varieties in different regions

[0098] In this experiment, the spring-sown ecological soybean variety "Qingsu No. 5" was used as the representative variety of spring-sowed ecological soybean, and the original soybean seeds S obtained by the seed breeding method described in the comparative example were used. 1 Generation as a control group, with the original soybean seed S obtained according to the seed breeding method described in Example 2 1 generation as the experimental group, wherein the planting area described in step (2) is the S obtained from Hami, Xinjiang 1 Substitute seed is experimental group 1, is the S obtained in Fushun, Liaoning with the planting area described in step (2). 1 The generation seeds are experimental group 2. Record the harvesting time of experimental group 1, experimental group 2 and control group respectively, and measure the 100-grain weight,...

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Abstract

The invention provides a seed breeding method for keeping spring sowing ecotype soybean variety seed nature stability. According to the method, by the aid of the characteristics of insensitive photoperiod response and high low-temperature resistance and weak-light resistance of spring sowing ecotype soybean varieties, greenhouse precocity planting of breeder seeds of spring sowing ecotype precocity soybean varieties is performed in February or March of tropical or subtropical areas to obtain S0 generation soybeans, the mature period of the breeder seeds of the spring sowing ecotype precocity soybean varieties is advanced to May or June, the S0 generation soybeans are planted in the areas in May or June, the conditions of the areas is characterized in that sunshine duration is 12h / d or more, average light intensity is larger than 500Lx and air humidity is lower than 20%, and S1 generation stock seed soybeans are acquired. According to the seed breeding method, seed vigor of the spring sowing ecotype soybean varieties is improved, the spring sowing ecotype soybean variety seed nature stability is kept, and the seed breeding method solves the problem of degeneration of the purity and the seed nature of the spring sowing ecotype soybean varieties caused by generation increase in seed propagation.

Description

technical field [0001] The invention relates to the technical field of plant seed breeding, in particular to a seed breeding method for keeping the seed properties of spring-sowed ecological soybean varieties stable. Background technique [0002] Soybean belongs to the cultivated soybean species (GlycineMaxL.Merr) of the family Fabaceae, and is a typical temperature-loving short-day plant. Among the factors affecting light and temperature, photoperiod plays a leading role. Therefore, in the traditional cultivation system, according to the response of each variety to the photoperiod, soybeans are divided into two types: spring sowing ecotype and summer sowing ecotype. Among them, the cultivation and production of spring-sown ecological soybean varieties are mainly distributed in tropical and subtropical regions. Since the maturity period of spring-sowed soybean seeds planted in tropical and subtropical regions is just in the high-temperature and rainy season (July-August), a...

Claims

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Application Information

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IPC IPC(8): A01H1/04
CPCA01H1/04
Inventor 顾卫红宋荣浩杨红娟朱丽华李超汉
Owner SHANGHAI ACAD OF AGRI SCI
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