糯玉米钾素分配转移特性的基因型差异.pdfVIP

主米科学2012.20阶:56-62 Joumal of Maize 5ciences 文章编号: 1 ∞5-(湖泊(2012)03-(灿56-07 糯玉米饵素分配转移特性的基因型差异 卢艳丽 l ，陆卫平 2 ，陆大雷 2 ，王继丰 2 ，刘小兵 2 (1.广东海洋太学农学院，广东湛江 524088; 2.扬州大学J 江苏省作物遗传生理重点实验室，江苏扬州 225缸)9) 摘 要:在同一供肥水平下研究 31 个糯r.:米品种的御素分配转移特性.分析糯玉米御素分配转移规律及其与 饵素吸收利用的关系，揭示佣素分配转移的基因型差异及其对产量形成的作用。结果表明，糯玉米生育期间饵素在 各器官的分配与氮、磷不同，何素不随生长中心的转移而转移，在李育期间饵素主要分配在叶片和苇秤中，开花前主 要分配在叶片中，开花后梆素分配到茎轩中最多c 糯玉米不同品种各器官愣素转移率存在显著差异。相关分析表明， 何素转移率主要影响产量和御素利用效率的高低.而对御素吸收总量及何收获指数影响较小。通径分析表明.鲜穗. 鲜子粒及成熟子粒中高产品种叶片的何素转移~较高.叶销的伸素转移率高有利于品种鲜穗、鲜子粒及成熟子粒饵 素利用效率的提高。 关键词:糯孟米;饵素转移率;基因型差异 中图分类号: 5513.01 文献标i只码:A Genetic Differences of Potassium Distribution and Translocation in Waxy Corn LU Yan-li\ LU Wei-ping!, LU Oa-le?, WANG Ji-fe晖， 口LIUX觅iao-bi怕》让由巾in (υ1. College of.4grorw町 Guangdong Oce(UI University, Zh(Ulji (Ulg 524088; 2. Jioogsu 丹wincia1 Key Lah of Crop Genetics and Physiology, Y(UI伊hou University, Yangzhou 225∞9， China) Abstract: In order 切 under百tand the regulari咛 of potassium(K) distribution and translocation and theír effects on K absorption and utilization , explain 由e genotype differences of K distribution and translocation and their effects on the yield 岛rmation， 31 waxy corn(Ze a rrw:ys L. ceratina Kulesh) varieties released in recent y创rs in China were plant- ed to analyze their characteristics of K distribution and translocation in the s缸ne fertilization condition. The re四lts showed that the K distribution centre did not change with the change of the growth centre in the process of growth of waxy corn. And the K mainly distributed in leaf and culm in the process of growth of waxy com. The K mainly dis- tributed in leaf before silking sta段， and there 缸e most K