Breeding and Thinking of Songya 7, a New Rice Variety of “Double Season with Same Variety”
Received date: 2024-07-24
Online published: 2024-09-12
The“double-season with same variety” is a breeding idea proposed by the author based on the consumption demand and early and late rice production situation in Hunan Province. It means that in the same rice area in Hunan Province, the same variety is “double-approved” for early and late rice, and the total growth period of the two seasons does not exceeds 220.0 days, and the total yield of the two seasons exceeds 1 000 kg/667 m2, the quality of early rice reaches the Ministry of Agriculture’s high-quality level 3 or above, and the quality of late rice reaches the Ministry of Agriculture’s high-quality level 2 or above. The new rice variety Songya 7, developed based on this, has the characteristics of compact plant type, thick stem, tolerance to dense planting, and strong resistance to low temperature and low oxygen during the germination stage. It is suitable for early and late double-cropping rice in Hunan Province, with good rice quality, high and stable yield, and suitable for light and simple cultivation such as machine transplanting and direct seeding. It was approved as early and late rice in Hunan Province in 2023 and 2024, respectively. This article introduced the breeding process and characteristics of Songya 7, as well as the concept of “double-season with same variety”, the breeding ideas and specific requirements, discussed the significance of the “double-season with same variety” production model in rice production.
LIU Licheng, MIN Jun, LI Yongchao, LIU Sanxiong, HU Min, PAN Xiaowu, TANG Shanjun, WANG Zhengqing . Breeding and Thinking of Songya 7, a New Rice Variety of “Double Season with Same Variety”[J]. China Rice, 2024 , 30(5) : 119 -122 . DOI: 10.3969/j.issn.1006-8082.2024.05.018
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