Chinese scientists have discovered a stable and high-yield gene for hybrid rice

Xinhua News Agency, Hangzhou, March 28
(Xinhua) -- A team led by Qian Qian of the China Rice Research Institute
, Xiong Guosheng of the Shenzhen Agricultural Genomics Research Institute and Li Jiayang of the China
Institute of Genetics and Developmental Biology
has discovered the companion gene for the "green revolution" in hybrid rice, which determines the stable and high-yielding performance of hybrid rice. The results were published recently in the journal Molecular Plants.
before
, plant strains are a very complex agro-features, which are the main factors affecting crop yields. The yield of crops can be significantly improved by the appropriate improvement of plant types such as plant height, stem number and spike grain number.
the 1950s and 1960s, breeders used "dwarf genes" to improve food crops such as rice and wheat to conduct high-yield breeding studies, known as the "green revolution", in order to solve the problem of food and clothing for the population of developing countries. One of the representative results is the International Rice Research Institute in 1967 to cultivate the "IR8", this variety successfully solved the food problem in Southeast Asia, known as miracle rice. Miracle rice "IR8" is high-yielding and small, and the two genes come from different rice plants.
china's rice workers are also the first to open rice dwarfing breeding team. The study found that China's super rice parent variety "Hua Zhan" contains a new allele of "one-foot gold inner fat synthesis gene", which can effectively increase the number and yield of rice stems.
" 'Hua Zhan' the biggest feature is more stems, stable yield is good, to 'Hua Zhan' as the father-bred varieties of more than 300, a series of super rice combinations to promote a new round of hybrid rice varieties, in production has a good effect. "Before the money
said.the
research team further found that miracle rice "IR8" and China's large-scale promotion of "double laurel", "Mingfeng 63" and "Hua Zhan" and many other representative varieties, are carrying stable and high-yielding "one-foot gold inner fat synthesis gene" allebetic gene, control the characteristics of the stalks favorable allied gene is from China
rice varieties "low-footed tip". This shows that in the breeding process of modern indica varieties, both genes are selected and widely used by breeders at the same time.