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Screening method for ear sprouting-resistant wheat varieties (lines)

A screening method, a technology of ear germination, applied in the field of wheat breeding

Active Publication Date: 2020-07-24
邯郸市农业科学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the prior art scheme has broken away from the natural environment in the field, and has certain limitations in identifying or screening resistant (resistant) ear-germinated wheat varieties

Method used

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  • Screening method for ear sprouting-resistant wheat varieties (lines)
  • Screening method for ear sprouting-resistant wheat varieties (lines)
  • Screening method for ear sprouting-resistant wheat varieties (lines)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] In the variety (strain) identification nursery of S1, the strains were randomly selected on June 6, 2019 (35 days after flowering), June 9 (38 days after flowering) and June 11 (40 days after flowering), respectively. Wheat ears of 168, line 215, line 233, line 235 and line 258, 15 ears per line, divided into three groups, 5 ears in each group, respectively recorded as group I, group II and group III, repeated 3 times ;

[0034] S2 Utilize group I wheat ears to measure grain water absorption rate and grain dehydration rate; Thresh the wheat ears of group I, weigh the grain weight (unsoaked grain weight) with a thousandth balance, then wrap the grain with wet gauze to keep it moist Take out the grain quickly after 1 hour, absorb the water on the surface of the grain with absorbent paper, and weigh it with a thousandth balance (the weight of the grain after absorbing water for 1 hour); then place the absorbed grain in a dry petri dish to make it After the water evaporate...

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Abstract

The present invention provides a screening method for ear sprouting-resistant wheat varieties (lines) by utilizing a protective mechanism of seeking advantages and avoiding disadvantages for wheat, and belongs to the technical field of wheat breeding. The method comprises the following steps of in a variety (line) identification nursery, randomly selecting wheat ears of the varieties (lines) 35 days, 38 days and 40 days after flowering of the wheat; sequentially measuring the wheat ear water carrying rates, the grain bubbling water demand rates, the grain imbibition time, the water-soaked wheat ear dewatering time, the grain water absorption rates and the grain dewatering rates of the varieties (lines) in different days; calculating the comprehensive ear sprouting-resistant values of the varieties in different days and performing value permutation; and selecting the minimum ear sprouting-resistant values of the varieties (lines) for evaluation, thereby performing identification and evaluation on the ear sprouting resistance of the wheat varieties (lines). Indexes of reducing the ear sprouting harm are brought into evaluation standards of the ear sprouting resistance of the wheat varieties (lines), so that the screened ear sprouting-resistant wheat varieties (lines) are close to agricultural production.

Description

technical field [0001] The invention relates to the technical field of wheat breeding, in particular to a screening method for ear-resistant germination wheat varieties (lines). Background technique [0002] Wheat ear germination is a phenomenon in which grains germinate on the ear when it encounters rainy and humid weather during the mature stage. Spike germination not only causes the yield of wheat to decrease, but also causes the quality to deteriorate, and even loses the value of food and seed. According to the statistics of the Food and Agriculture Organization of the United Nations, the annual loss caused by ear germination accounts for about 20% of the world's total wheat production, which is equivalent to the annual total wheat production in my country. In my country, 85% of the wheat-producing areas have hidden dangers of ear germination disasters. Among them, large-scale ear germination disasters have occurred many times in the Huanghuai wheat area and the middle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C1/02G06Q50/02G06Q10/06G01N33/00
CPCA01C1/025G06Q50/02G06Q10/06393G01N33/0098
Inventor 肖磊谢淑芹裴艳婷
Owner 邯郸市农业科学院
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