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A method for identifying late-harvest tolerance traits in rice

A technology of rice and traits, applied in rice cultivation and other directions, can solve the problems of nutrient storage material consumption and storage quality decline.

Active Publication Date: 2022-02-18
HUNAN RICE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ear germination at the mature stage causes catabolism activities inside the seeds, and the nutrient storage substances are consumed, resulting in a decline in the quality of rice for consumption and storage

Method used

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  • A method for identifying late-harvest tolerance traits in rice

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1, establishment of method

[0055] 1. Cultivation and management

[0056] Requirements for the experimental field: drainage and irrigation are convenient, and the field ridge should be prepared and covered with film (height: 25cm) before transplanting.

[0057] Drainage and irrigation system setting requirements: the test material area can be irrigated and drained.

[0058] Transplanting specifications: 20cm×20cm, 80cm aisles are reserved between plots, and the number of planting rows is not less than 10; when transplanting, 2 grain seedlings are inserted in each stalk of hybrid rice, and 3 grain seedlings are inserted in each stalk of conventional rice; Insert 4 lines of protection.

[0059] Each test material is provided with statistically significant biological repetitions (for example, 100 strains).

[0060] 2. Character identification

[0061] Ear maturity refers to the yellowing of more than 90% of the glumes of each ear. Among the rice for testin...

Embodiment 2

[0076] Embodiment 2, the application of method

[0077] Trial time: 2018.

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PUM

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Abstract

The invention discloses a method for identifying late-harvest tolerance traits of rice. The method provided by the present invention includes the following steps: normal cultivation and management of the rice for testing; if the rice for testing meets the following three indicators at the same time, the rice for testing is a late-harvest resistant rice variety: Angle ≤ 30°; ② The grain shattering rate on the day of maturity ≤ 5%; ③ The germination rate of buds tested for germination on the day of maturity ≤ 10%. The inventors of the present invention define the traits of stem lodging, grain shattering and seed dormancy after rice matures as late harvest tolerance traits of rice. This evaluation method will help the rapid screening of late-harvest tolerant rice varieties.

Description

technical field [0001] The invention relates to a method for identifying late-harvest tolerance traits of rice. Background technique [0002] In terms of production, due to rainy weather, shortage of labor, and tension in the drying field, it is necessary to delay the harvest of rice. Delayed harvest of rice mainly involves the following three traits: (1) lodging; (2) shattering; (3) dormancy. [0003] After rice matures, the degree of rice straw lodging affects the difficulty of rice harvesting. Although seedling quality, field cultivation, water and fertilizer management, plant diseases and insect pests and other factors can all cause lodging, many studies have shown that lodging is an inherent characteristic of varieties, and there are obvious differences among varieties. [0004] The loss caused by the strength of shattering to delayed harvest varies with different varieties. Existing research results have shown that during mechanical operations: the loss rate of easy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/22
CPCA01G22/22
Inventor 余应弘汤国华曾晓珊谢红军朱明东
Owner HUNAN RICE RES INST