Accelerant for glume opening of photo-thermo-sensitive genic male sterile rice line under high-temperature stress and preparing method and application of accelerant

A photothermosensitive sterility and high temperature stress technology, which is applied in the field of promoters and formulations for the flowering of rice photothermosensitivity genic sterile lines under high temperature stress, can solve problems such as the reduction of seed setting rate and seed yield, and achieves The effect of improving seed setting rate and seed yield, increasing CO2 concentration, and promoting organ respiration

Active Publication Date: 2016-11-09
YANGZHOU UNIV
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Problems solved by technology

Under high temperature, the photothermosensitive genic male sterile line of rice cannot bloom normally, which is a major obstacle for the hybrid seed production of the photothermosensitive genic male sterile line and the

Method used

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  • Accelerant for glume opening of photo-thermo-sensitive genic male sterile rice line under high-temperature stress and preparing method and application of accelerant
  • Accelerant for glume opening of photo-thermo-sensitive genic male sterile rice line under high-temperature stress and preparing method and application of accelerant

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Embodiment Construction

[0015] (1) Material preparation

[0016] 1. Citric acid, molecular formula: C 6 h 8 o 7 ·H 2 O, molecular weight, 210.14, grade: chemically pure, 500g per bottle. According to the amount per hectare 30 ~ 60g, or every 667m 2 Dosage 2 ~ 4g to calculate the total dosage.

[0017] 2. Ethanol (ethanol), chemical formula: C 2 h 5 OH, molecular weight, 46.07, grade: analytical grade, absolute ethanol, 500mL per bottle. According to the dosage per hectare 600 ~ 900mL, or every 667m 2 The dosage is 40-60mL to calculate the total dosage.

[0018] 3. Methyl Jasmonate, molecular formula: C 13 h 20 o 3 , molecular weight, 224.30, purity: 95%, 5mL per bottle. According to the dosage per hectare 3.0 ~ 6.0mL, or every 667m 2 The dosage is 0.2-0.4mL to calculate the total dosage.

[0019] Both citric acid and ethanol are sold in general chemical reagent stores, and methyl jasmonate is sold by Shanghai Yika Biotechnology Co., Ltd., Nanjing Meibo Biotechnology Co., Ltd., Beijing ...

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Abstract

The invention provides an accelerant for glume opening of a photo-thermo-sensitive genic male sterile rice line under high-temperature stress and a preparing method of the accelerant. The accelerant is prepared from citric acid, ethyl alcohol and a plant growth regulating substance, namely, jasmonic acid methyl ester, the three substances have the supplementary effect after being prepared into a solution, the solution is sprayed in the heading stage and can effectively promote glume opening of the photo-thermo-sensitive genic male sterile rice line under high-temperature stress, and the setting percentage and the seed yield after hybridization of the photo-thermo-sensitive genic male sterile rice line and a restoring line are increased.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to an accelerator for flowering of rice photothermosensitive male sterile lines under high temperature stress, a preparation method and application thereof. Background technique [0002] The establishment of two-line hybrid rice breeding theory and technology is a major innovation in rice hybrid breeding in my country (Lu Xinggui et al., 2001; Yuan Longping, 2002). At present, the annual planting area of ​​two-line hybrid rice in my country has exceeded 5 million hectares, which has played an important role in rice production and food security in my country (Shu Zhifen et al., 2016). The core content of two-line hybrid rice breeding is the use of rice photothermosensitive genetic male sterile line. Under specific light and temperature conditions, the photothermosensitive genic male sterile line of rice can realize the transition from nuclear male sterility to fertility. Ther...

Claims

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Application Information

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IPC IPC(8): A01N37/42A01N37/36A01P21/00A01G7/06
CPCA01G7/06A01N37/36A01N37/42A01N2300/00
Inventor 杨建昌陈静王志琴
Owner YANGZHOU UNIV
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