南粳44植株抗倒伏能力的研究  

Study on Lodging Resistance of Japonica Rice Variety "Nanjing 44"

作　　者：朱镇[1] 杨艳华[1] 张亚东[1] 陈涛[1] 赵庆勇[1] 姚姝[1] 周丽慧[1] 王才林[1] 

机构地区：[1]江苏省农业科学院粮食作物研究所江苏省优质水稻工程技术研究中心国家水稻改良中心南京分中心,江苏南京210014

出　　处：《江西农业学报》2012年第9期19-21,25,共4页Acta Agriculturae Jiangxi

基　　金：江苏省自主创新基金[cx(10)401]

摘　　要：以不抗倒伏品系宁7412为对照,从形态、生理等方面研究了南粳44的抗倒伏机理,结果表明:与宁7412相比,南粳44的茎秆表现为基部第2和第3节间粗短、茎壁厚、茎秆充实度好;成熟期茎秆的SiO2含量、钙含量以及可溶性糖含量显著高于宁7412,K2O含量显著低于宁7412;茎秆基部节间的表皮和基本组织的细胞层数和维管束数目比宁7412多、宽度厚,具有较好的抗折力。Taking the lodging- susceptible strain ＂Ning 7412＂ as the check, the author studied the lodging- resistant mechanism of the japonica rice variety ＂Nanjing 44＂ from the aspects of morphology and physiology. The results showed that ： comparing with ＂Ning 7412＂, the basal second and third stem internodes of ＂Nanjing 44＂ was shorter, wider, thicker and better filled. The contents of SiO2, calcium and soluble sugar in the mature stem of ＂Nanjing 44＂ were significantly higher than those of ＂Ning 7412＂, while the content of K20 of ＂Nanjing 44＂ was＇significantly lower than that of ＂Ning 7412＂. The epidermis and basic tissue of the basal stem internodes of ＂Nanjing 44＂ had more and thicker cell lays and vascular bundles than those of ＂Ning 7412＂, so the lodging resistance of ＂Nanjing 44＂ was better than that of ＂Ning 7412＂.

关 键 词：南粳44 抗倒伏能力 物理性状 生化成分 茎壁组织结构 

分 类 号：S511[农业科学—作物学]