Progress in the study of functional genes related to direct seeding of rice

Abstract

Rice is a major food crop in the world. Owing to the shortage of rural labor and the development of agricultural mechanization, direct seeding has become the main method of rice cultivation. At present, the main problems faced by direct seeding of rice are low whole seedling rate, serious weeds, and easy lodging of rice in the middle and late stages of growth. Along with the rapid development of functional genomics, the functions of a large number of genes have been confirmed, including seed vigor, low-temperature tolerance germination, low oxygen tolerance growth, early seedling vigor, early root vigor, resistance to lodging, and other functional genes related to the direct seeding of rice. A review of the related functional genes has not yet been reported. In this study, the genes related to direct seeding of rice are summarized to comprehensively understand the genetic basis and mechanism of action in direct seeding of rice and to lay the foundation for further basic theoretical research and breeding application research in direct seeding of rice.

Design and experiment of impeller seed guide device for rice internal suction hole direct seeding device

“…The mechanized precision hill direct seeding technology, accurately spacing rice seeds in the eld, is widely adopted due to its compatibility with rice cultivation and agronomy. 7 . It is of great signi cance to realize the simpli cation, mechanization and scale of rice production 8 .…”

The Function of SD1 on Shoot Length and its Pyramiding Effect on Shoot Length and Plant Height in Rice (Oryza sativa L.)

“…Although direct seeding rice has many advantages, it still faces severe problems and challenges in application and promotion because modern varieties were selected through traditional transplanting methods thus, are not adapted to direct seeding conditions. Many modern rice varieties are prone to problems such as poor seedling emergence and serious weed infestation in a direct seeding system (Li et al 2023 ). Therefore, it is necessary to develop rice varieties with strong seedling vigor, which is an imperative trait for stable seedling establishment and enhancing weed competitiveness in rice direct seeding system (Zhang et al 2005 ; Mahender et al 2015 ).…”