施氮量和密度与DEP1/dep1对高产粳稻品种武运粳8号产量和品质的影响  

Nitrogen supply rate,planting density and DEP1/dep1coordinately affect rice yield and quality in high-yielding japonicarice variety Wuyunjing 8

作　　者：王俊鹏 高英博 刘欣 王子 刘畅 陈悦琪 吕旻珈 张小祥 陈琛[1,3] 周娟 周勇[1] 梁国华 黄建晔 王余龙 董桂春 姚友礼 WANG Junpeng;GAO Yingbo;LIU Xin;WANG Zi;LIU Chang;CHEN Yueqi;LÜMinjia;ZHANG Xiaoxiang;CHEN Chen;ZHOU Juan;ZHOU Yong;LIANG Guohua;HUANG Jianye;WANG Yulong;DONG Guichun;YAO Youli(Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Key Laboratory of Plant Functional Genomics of the Ministry of Education,Yangzhou University,Yangzhou 225009,China;Lixiahe Agricultural Research Institute of Jiangsu Province,Yangzhou 225007,China;Zhenjiang Agricultural Research Institute in Hill Area of Jiangsu Province,Jurong 212400,China)

机构地区：[1]扬州大学江苏省作物遗传生理重点实验室培育点/江苏省粮食作物现代产业技术协同创新中心/教育部植物功能基因组重点实验室,江苏扬州225009 [2]江苏里下河地区农业科学研究所,江苏扬州225007 [3]江苏丘陵地区镇江农业科学研究所,江苏句容212400

出　　处：《扬州大学学报（农业与生命科学版）》2021年第3期82-89,共8页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：国家自然科学基金资助项目(31571608);江苏省科技计划项目(BK20151311,BK20201219);江苏省农业自主创新资金项目[CX(16)1001];植物功能基因组学教育部重点实验室开放课题(ML201903)。

摘　　要：通过2年大田试验,比较武运粳8号(WYJ8,dep1)与导入DEP1的武运粳8号互补系(WYJ8-CP)的产量和稻米品质,研究氮肥水平和密度与DEP1/dep1基因对高产粳稻品种产量和品质的影响。结果表明:在减少氮肥供应的情况下WYJ8-CP的产量高于WYJ8,后者更耐受高氮肥水平。在低氮肥条件下提高移栽密度有助于获得更高的产量,但WYJ8的响应范围较WYJ8-CP窄。氮肥水平增加后,WYJ8和WYJ8-CP的加工品质响应差异不大。WYJ8-CP的直链淀粉含量和胶稠度与WYJ8差别不大,但蛋白质含量和糊化温度显著低于WYJ8,其蒸煮食味品质有所提高。这一研究说明在低氮肥水平下,育成品种中利用DEP1基因有助于提升产量和稻米品质。To clarify the interactive effect of nitrogen(N)supply rate,planting density and DEP1/dep1 on rice grain yield and quality,we compared a high yielding japonica rice variety Wuyunjing 8(WYJ8,dep1)with its DEP1 complementary line(WYJ8-CP)through two year field experiment.The results showed that WYJ8-CP produced higher grain yield than WYJ8 under reduced N rate,and the latter was more tolerant to high N rate.Increasing planting density under low N rate promoted grain yield,but the response range of WYJ8 was less than that of WYJ8-CP.The milling qualities of WYJ8 and WYJ8-CP did not respond significantly to N rate change.The amylose content and gel consistency of WYJ8-CP were similar to those of WYJ8,but the protein content and gelatinization temperature were significantly lowered,so the cooking and eating qualities of WYJ8-CP improved significantly.The results indicated that utilization of DEP1 instead of dep1 could improve rice yield and quality at lower N rate.

关 键 词：水稻 氮肥 密度 DEP1 产量 品质 

分 类 号：S511[农业科学—作物学]