Breeding Resilience:Exploring Lodging Resistance Mechanisms in Rice  

作　　者：Durga Prasad MULLANGIE Kalaimagal THIYAGARAJAN Manonmani SWAMINATHAN Jagadeesan RAMALINGAM Sritharan NATARAJAN Senthilkumar GOVINDAN 

机构地区：[1]Department of Genetics and Plant Breeding,Centre for Plant Breeding and Genetics,Tamil Nadu Agricultural University,Coimbatore 641003,India [2]Department of Rice,Centre for Plant Breeding and Genetics,Tamil Nadu Agricultural University,Coimbatore 641003,India [3]Centre for Molecular Biology and Biotechnology,Tamil Nadu Agricultural University,Coimbatore 641003,India

出　　处：《Rice science》2024年第6期659-672,共14页水稻科学（英文版）

摘　　要：Lodging is more than just plants falling over;it incurs significant economic losses for farmers leading to a decrease in both yield and quality of the final produce.Human management practices,such as dense sowing,excessive nitrogen fertilizer applications,inappropriate sowing dates,and upland rice cultivation,exacerbate the risk of lodging in rice.While breeders have developed high-yielding rice varieties utilizing the sd1 gene,relying solely on this gene is insufficient to enhance lodging resistance.Identifying the traits that contribute to lodging resistance is crucial.Key factors include biochemical,anatomical,and morphological traits,such as the levels of lignin,cellulose,hemicellulose,silicon,and potassium,along with the number and area of vascular bundles and the thickness,diameter,and length of the culm.Moreover,markers associated with lodging-related genes,like SCM2,SCM3,SCM4,and prl4,can be utilized effectively in marker-assisted backcrossing to develop rice varieties with desirable culm traits.This literature review aims to aid rice breeders in addressing the issue of lodging by examining traits that influence lodging resistance,developing phenotyping strategies for these traits,identifying suitable instrumentation,exploring methods for screening lodging-resistant plants,understanding the mathematical relationships involved,and considering molecular breeding aspects for pyramiding genes related to lodging.

关 键 词：RICE lodging resistance breaking and bending type lodging culm strength SCM gene prl gene LIGNIN cellulose 

分 类 号：S511[农业科学—作物学]