Low-temperature sensitive sterile rice fertility conversion monitoring method
A fertility conversion, low temperature technology, applied in rice cultivation, botanical equipment and methods, plant genetic improvement, etc., can solve problems such as harming the purity of seed production, and achieve the effects of ensuring purity, improving purity, and reducing the risk of seed production.
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Embodiment 1
[0014] From August 18 to 20, 2005, Nanjing suffered from low temperature for three consecutive days. The average temperature measured by the Meteorological Observatory for the three days was 22.7°C, and the average minimum temperature was 21.1°C. Jiangsu Academy of Agricultural Sciences has 1 mu of two-line method hybrid rice new combination breeding field (a total of 10 new combinations of low-temperature-sensitive male sterile line seed production with a fertility transition temperature below 24°C) and the female parent is 5-10 days before ear emergence. sky. The PTWD-2A temperature sensor is used to automatically collect data with the data collector (TRM-ZS1 type), and the average temperature of the plant stems 20 cm from the ground calculated at 02:00, 08:00, 14:00, and 20:00 was 22.3°C on the 18th. , which is expected to affect the fertility and seed production purity of the male sterile line. From the afternoon of August 18th, water from the reservoir was used for 15cm ...
Embodiment 2
[0016] The applicant's 3-mu two-line method hybrid rice Liangyou 108 farming field is located in the rice test field of Jiangsu Academy of Agricultural Sciences. The female parent is the low-temperature-sensitive CMS line Pei'ai 64S, which was sown on June 1 and transplanted on June 25. In 2005, there was continuous low temperature in Nanjing area on August 18-20 (the average daily temperature was 21.5-23.5°C). At this time, the female parent was just 7 days before ear emergence. Adopt PTWD-2A type temperature sensor to automatically collect data with data collector (TRM-ZS1 type), measure the plant stem temperature 15 centimeters above the ground with 02:00, 08:00, 14:00, and 20:00 on the 18th, and the average value of 4 times is 22.3℃, it is expected to affect the fertility and seed production purity of the male sterile line. The 10 cm water layer is used for irrigation, the water temperature of the irrigation river is 28.9 °C, the water temperature of the water inlet is 2...
Embodiment 3
[0018] In 2005, the applicant unit planted 1 mu of Pei'ai 64S test field, and set up two methods of wet irrigation (control) and deep water flow irrigation (treatment). During the sensitive period of fertility, there were 7 days from August 18th to August 26th under the influence of low temperature below 24°C. The PTWD-2A temperature sensor data collector (TRM-ZS1 type) is used to automatically collect data every 30 seconds, and calculate the temperature and temperature of the plant stems 20 cm above the ground measured at 02:00, 08:00, 14:00, and 20:00 every day. The measurement results proved that the average stem temperature and average temperature of 20cm plants in the control field for 7 days were 22.9°C and 22.5°C, respectively, while the average stem temperature and average temperature of 20cm plants in the treated field with running water irrigation were 23.3°C and 24.6°C, respectively. The average fertile pollen percentages of the control and treatment fields were 17....
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