Method for increasing pollen sterility rate of BNS wheat male sterility line through lansoprazole

Abstract

The invention discloses a method for increasing the pollen sterility rate of a BNS wheat male sterility line through lansoprazole. In the wheat main production area of Huang-Huai River, seeds of temperature-sensitive genic male sterility wheat BNS are sown to form the sterility line under the sterile stage sowing condition from 23rd September to 17th October, a lansoprazole solution with mass concentration of 90-360 mg / L is sprayed to whole BNS plants once every four days from the first day when stamens are developed till the stamen and pistil primordium differentiation stage to the day when ears just completely grow out of leaf sheaths of flag leaves, the spraying amount is 50-80 L / mu, and other steps refer to those in the ordinary field production management mode. Through field production and treatment of the lansoprazole solution, the pollen sterility rate of the BNS sterility line is close to the complete sterility level, the self-fruit rate is zero, and the requirement for the sterile line in the hybrid wheat production is met; the method is easy to operate, low in investment cost, capable of saving time and labor and wide in application prospect.

Description

technical field [0001] The invention belongs to the technical field of chemical regulation and control of BNS pollen fertility of thermosensitive genic male sterile wheat, and specifically relates to a chemical regulation method for improving the pollen abortion rate of BNS wheat male sterile line by using lansoprazole. Background technique [0002] The utilization of wheat photothermo-sensitive male sterility (PTSMS) is a major advance in the research of hybrid wheat. The wheat light-temperature-sensitive sterile lines discovered in my country, such as ES, C49S, ZP, BS, YS and BNS, have become important test materials for hybrid wheat research. [0003] Thermosensitive genic male sterile wheat BNS was successfully bred by Ru Zhengang in 2002. BNS has the characteristics of complete sterility and complete fertility transformation, and the fertility change trend is: complete abortion-semi-sterility-complete fertility. Low temperature is the main reason for affecting the fert...

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Problems solved by technology

Previous studies have pointed out that the existing chemical andricides such as ethephon can effectively kill males, but after the use of ethephon, there are many problems such as slowing down the development of wheat flowers, difficulty in heading, easy to green and late maturity, and easy to be infected with diseases and insect pests. Other existing chemical andricides are highly toxic to wheat plants, reduce male fertility, and have a strong inhibitory effect on pistil fertility. After artificial assisted pollination, the seed setting rate is low and the grains are not full, and the drug price is high. Therefore, the application of existing chemical andricides in production is limited, and existing chemical hybridization agents are used to overcome the interference of periodic fluctuations in temperature during the sensitive period of fertility conversion on the fertility stability of BNS male sterile lines of thermosensitive genic male sterile wheat At present, there are few reports, and there is no report on the use of lansoprazole to improve the pollen abortion rate of male sterile lines of BNS wheat

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