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栽培稻种质资源的南方水稻黑条矮缩病抗性鉴定评价
农保选1, 秦碧霞2, 夏秀忠1, 张宗琼1, 杨行海1, 曾宇1, 谢慧婷2, 李战彪2, 韩龙植3, 李丹婷1
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(1.广西壮族自治区农业科学院水稻研究所/广西水稻遗传育种重点实验室;2.广西壮族自治区植物保护研究所/广西作物病虫害生物学重点实验室;3.中国农业科学院作物科学研究所)
摘要:
南方水稻黑条矮缩病是一种以白背飞虱为主要传播介体的病毒性病害,近年来给我国水稻生产带来巨大危害。为筛选具有南方水稻黑条矮缩病抗性的稻种资源,本研究采用田间自然诱发鉴定和室内人工接种鉴定方法相结合,对2812份来自国内外的栽培稻种质资源进行了南方水稻黑条矮缩病抗性鉴定。结果表明,供试材料中抗病材料比例仅为0.46%,不同地理来源、不同种质类型、不同亚种类型的抗病性水平不一致;感病材料比例达99.54%,其中包含多个我国近年来水稻生产中的主推品种,表明栽培稻资源的总体抗性水平低。结合田间自然诱发鉴定、室内人工接种鉴定和农艺性状考查,获得7份抗病表现稳定且农艺性状较好的优异抗源材料,可作为抗源亲本用于南方水稻黑条矮缩病抗性基因挖掘和水稻品种抗南方水稻黑条矮缩病改良。
关键词:  南方水稻黑条矮缩病  栽培稻种质资源  抗性鉴定  优异抗源
DOI:10.13430/j.cnki.jpgr.20210120002
投稿时间:2021-01-20修订日期:2021-02-09
基金项目:国家重点研发计划(2016ΥFDO100100,2018YFD0200302);广西自然科学基金(2020GXNSFAA259041);广西农业科学院基本科研业务专项(桂农科2019M28,桂农科2021YT030)Foundation projects:National Key Technology Research and Development Program of China(2016ΥFDO100100,2018YFD0200302); GuangxiNatural ScienceFoundation(2020GXNSFAA259041); Guangxi Academy of Agricultural Sciences Basic Scientific Research Operating Expenses Project(Guinongke2019M37, Guinongke2021YT030)
Identification and evaluation of Southern rice black-streaked dwarf disease for cultivated rice germplasm resources
NONG Bao-xuan1, QIN Bi-xia2, XIA Xiu-zhong1, ZHANG Zong-qiong1, YANG Xing-hai1, ZENG Yu1, XIE Hui-ting2, LI Zhan-biao2, HAN Long-zhi3, LI Dan-ting1
(1.Rice Research Institute,Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding;2.Plant Protection Research Institute,Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Biology for Crop Diseases and Insect Pests;3.Institute of CropSciences,Chinese Academy of Agricultural Sciences)
Abstract:
Southern rice black-streaked dwarf disease(SRBSDD), which is transmitted by white-backed planthopper [Sogatella furcifera (Horváth)], has caused severe yield loss in epidemic years in rice production. However, the reports on large-scale screening of SRBSDD resistant resources remain rare. In this study, 2812 Cultivated Rice Germplasm were evaluated for SRBSDD resistance under field and greenhouse conditions. The results showed that only 0.46% of tested accessions were resistance,the disease resistance level of different geographical sources, different germplasm types and different subspecies types was not consistent; 99.54% of tested accessions were susceptible, including many widespread varieties that are deploying in farming practice. That implied a potential of the increasing incidence and degree of SRBSDD in China in future. Seven genotypes showed reliable moderate disease resistance in multiple rounds of selection, with an average disease incident ranged from 6.72% to 28.51%. Specifically, avariation on heading date, plant height, effect panicle per plant, panicle length, spikelets per panicle, spikelet fertility, 1000-grain weight, single plant yield and length/width ratio of grain was observed in those 7 genotypes. Thus, this study unlocked the diseased incidence of SRBSDD in Cultivated Rice Germplasm, which will provide reference for rice resistance breeding.
Key words:  Southern rice black-streaked dwarf disease  cultivated rice germplasm  resistance evaluation  excellent resistance resource

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