A kind of breeding method of fast grain filling and fast dehydration wheat
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A grain and wheat technology, applied in the direction of botany equipment and methods, plant genetic improvement, application, etc., to achieve the effect of short time, full grain and good familiarity
Active Publication Date: 2018-11-30
JIANGSU LIXIAHE REGION AGRI RES INST
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[0005] The purpose of the present invention is to solve the problems faced by wheat production under the current situation, and to provide a breeding method for wheat with fast grain filling and fast dehydration
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Embodiment 1
[0028] 1. Parental selection
[0029] The varieties with high grouting rate and high strength, early grouting completion time and high grain weight, high dehydration rate and short time, and early maturity were selected as the female parent and the male parent for hybridization.
[0030] The Yang 91F138 line is selected from the backbone parent Yangmai 158 in my country. It has the characteristics of fast seedling emergence, fast grain filling, high grain weight, moderate resistance to scab, and excellent quality. 2.0 g / thousand grains per day, the grouting is basically completed 35 days after flowering and the thousand-grain weight is > 40 g, the grain dehydration is fast (the moisture content of the grain decreases by 4.5% on average every day after physiological maturity), and the dehydration time is short (the moisture content of the grain after 4-6 days of dehydration lower than 15%) and the moisture content of the grain at the full maturity stage is lower than 15%; Yang 90...
Embodiment 2
[0046] 1. Parent selection:
[0047] The varieties with high grouting rate and high strength, early grouting completion time and high grain weight, high dehydration rate and short time, and early maturity were selected as the female parent and the male parent for grouping.
[0048] Yangmai 158, the backbone parent in my country, has the characteristics of fast seedling germination, fast grain filling, high grain weight, moderate resistance to scab, and excellent quality. >40 grams, the grain dehydrates quickly (the average grain moisture content decreases by 4.5% per day after physiological maturity), the dehydration time is short (the grain moisture content drops below 15% after 4-6 days of dehydration), and the grain moisture content is lower than 15% at the full maturity stage.
[0049] Yangmai 158 was used as the female parent, and the powdery mildew resistant near-isogenic line material selected from the offspring of Y.C / Yangmai 5 / / 4*85-85 was used as the male parent for cro...
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Abstract
The invention discloses a breeding method for wheat with fast grain filling and fast dehydration, and belongs to the field of wheat breeding. The method comprises the following steps: (1) carrying out parental research, identifying the grain filling and dehydration characteristics of the wheat variety, and determining the hybrid combination of the parents; (2) determining the hybrid breeding or backcross breeding program according to the selection requirements; (3) the seed selection process In the process, the investigation of morphological traits, the study of grain filling and dehydration characteristics of wheat, staged sowing and yield identification were used comprehensively to screen out genotypes with fast grain filling, fast dehydration and high yield. (4) Breed new wheat varieties with fast grain filling and fast dehydration. The invention discloses a breeding method for wheat with fast grain filling and fast dehydration, which simultaneously applies early generation morphology selection and research on grain filling characteristics and dehydration characteristics to wheat breeding, and can accurately select wheat materials with fast grain filling and high dehydration rate. The variety bred by the method of the invention matures early, has good ripeness and full grain. Fast grouting rate, early completion of grouting time and high thousand-grain weight. After the grouting is completed efficiently, it immediately enters the rapid dehydration stage, the dehydration rate is fast, and the maturity period is early. Under the condition of late sowing, it can still be harvested early, and it can make stubble for rice in advance. Adapting to the new demand under the current new situation of wheat can lay the foundation for the annual increase of rice and wheat production in the middle and lower reaches of the Yangtze River.
Description
technical field [0001] The invention belongs to the technical field of wheat breeding, in particular to a breeding method for wheat with fast grain filling and fast dehydration. Background technique [0002] As one of the most important food crops in the world and our country, wheat plays a pivotal role in food production. The continuous improvement of the yield potential of varieties is a long-term task of our country, and with the rapid increase of population, the acceleration of urbanization, and the decrease of grain field area, it is more urgent to increase the grain yield and total yield. [0003] Grain filling characteristics of wheat are important physiological traits that affect yield, and its research can provide an important basis for setting grain yield goals and choosing breeding strategies. Grain filling is an extremely important and dynamic growth stage in the growth and development of wheat. The dry matter accumulation of wheat grains during the grain fillin...
Claims
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Application Information
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