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A screening method for spike-tolerant sprouting wheat varieties (lines)

A screening method, ear germination technology, applied in the field of wheat breeding, to achieve the effect of reducing the water loading rate of the ear, slowing down the loss and prolonging the required time

Active Publication Date: 2022-01-11
邯郸市农业科学院
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  • Description
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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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  • A screening method for spike-tolerant sprouting wheat varieties (lines)
  • A screening method for spike-tolerant sprouting wheat varieties (lines)
  • A screening method for spike-tolerant sprouting wheat varieties (lines)

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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 invention utilizes the protection mechanism of wheat "seeking advantages and avoiding disadvantages" to provide a screening method for ear-resistant germination wheat varieties (strains), which belongs to the technical field of wheat breeding and comprises the following steps: in the variety (strain) identification nursery, respectively 35, 38 and 40 days after wheat flowering, the wheat ears of each variety (line) were randomly selected; the water loading rate of wheat ears, grain bubbling water demand rate, and grain imbibition stage required for each variety (line) were measured in sequence. Time, dehydration time of soaked wheat ears, grain water absorption rate and grain dehydration rate; calculate the comprehensive ear germination value of each variety in different days and arrange them in size; select the minimum ear germination value of each variety (line) to evaluate, so as to evaluate the wheat The ear germination resistance of varieties (lines) was identified and evaluated. In the present invention, the indicators for mitigating the harm of ear germination are incorporated into the evaluation criteria of ear germination tolerance of wheat varieties (strains), and then the selected wheat varieties (strains) of ear germination tolerance 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 Patents(China)
IPC IPC(8): A01C1/02G06Q50/02G06Q10/06G01N33/00
CPCA01C1/025G06Q50/02G06Q10/06393G01N33/0098
Inventor 肖磊董策谢淑芹蔺桂芬裴艳婷
Owner 邯郸市农业科学院
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