江西农业学报
江西農業學報
강서농업학보
ACTA AGRICULTURAE JIANGXI
2014年
7期
50-54
,共5页
褚晋%何鹏飞%赵正龙%吴毅歆%何朋杰%何月秋
褚晉%何鵬飛%趙正龍%吳毅歆%何朋傑%何月鞦
저진%하붕비%조정룡%오의흠%하붕걸%하월추
水稻稻瘟病%近等基因系%抗谱%联合抗病性
水稻稻瘟病%近等基因繫%抗譜%聯閤抗病性
수도도온병%근등기인계%항보%연합항병성
Rice blast%Near-isogenic line%Resistant spectrum%Associative resistance
采用苗期喷雾法，评价了丽江新团黑谷、CO39和IRBL系列等3套近等基因系水稻品种对云南省腾冲县和罗平县两个病圃稻瘟病菌的抗性水平及利用价值。结果表明：C101A51（Pi-2（t））、IRBL-22（Pi-9（t））和IRBL-23（Pi-12（t））等3个品系的抗性最强，抗病频率分别为：94．22％、93．50％、90．61％。对2个抗瘟基因的联合抗病性分析表明，Pi-2＋Pi-9基因、Pi-2＋Pi-12基因搭配的联合抗病性系数达0．88和0．86，在抗病育种中适于聚合应用。
採用苗期噴霧法，評價瞭麗江新糰黑穀、CO39和IRBL繫列等3套近等基因繫水稻品種對雲南省騰遲縣和囉平縣兩箇病圃稻瘟病菌的抗性水平及利用價值。結果錶明：C101A51（Pi-2（t））、IRBL-22（Pi-9（t））和IRBL-23（Pi-12（t））等3箇品繫的抗性最彊，抗病頻率分彆為：94．22％、93．50％、90．61％。對2箇抗瘟基因的聯閤抗病性分析錶明，Pi-2＋Pi-9基因、Pi-2＋Pi-12基因搭配的聯閤抗病性繫數達0．88和0．86，在抗病育種中適于聚閤應用。
채용묘기분무법，평개료려강신단흑곡、CO39화IRBL계렬등3투근등기인계수도품충대운남성등충현화라평현량개병포도온병균적항성수평급이용개치。결과표명：C101A51（Pi-2（t））、IRBL-22（Pi-9（t））화IRBL-23（Pi-12（t））등3개품계적항성최강，항병빈솔분별위：94．22％、93．50％、90．61％。대2개항온기인적연합항병성분석표명，Pi-2＋Pi-9기인、Pi-2＋Pi-12기인탑배적연합항병성계수체0．88화0．86，재항병육충중괄우취합응용。
The resistances of three sets of rice near -isogenic lines ( NILs) with Lijiangxintuanheigu , CO39 and IRBL back-grounds to Magnaporthe oryzae from Tengchong and Luoping rice blast nurseries , and their utilization potential were evaluated by spray inoculation at seedling stage .The results showed that the NILs C101A51 (Pi-2(t)), IRBL-22 (Pi-9(t)) and IRBL-23 (Pi-12(t)) were the most resistant with the resistant frequencies of 94.22%, 93.50%and 90.61%respectively.The analy-sis of associative resistance of two blast -resistant genes indicated that the gene combinations Pi-2+Pi-9 and Pi-2+Pi-12 had the associative resistance coefficients of 0.88 and 0.86 respectively, implying that these gene combinations may be used for rice blast resistance breeding .
