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1、3．1．3Saline-alkalinetoleranceevaluationatgerminationstage?????????????????263．2Evalutionofricesaline．a(chǎn)lkalinetoleranceatseedlingstage?????????????ju3．2．1lnfectionofsaline．a(chǎn)lkailinestresstoriceatseedlingstage????????????一ju3．2．2Analysisofriceperformanceatseedlingsta
2、geundersaline’alkailinestess????????jI3．2．3Saline．a(chǎn)lkalinetoleranceevaluationatseedlingstage??????????????????‘’j。3．3QTLmappingofriceundersaline—alkailinestressatgerminationandseedlingstage8???．．363．3．1PerfornlancevariationoftherelatedtraitsforF2：3linesunderthesali
3、ne’alkailinestress?363．3．2ConstructionOfricegeneticmap?????????????????????????????··393．3．3QTLanalysisoftherelatedtraitsinricegeriminationandseedlingstage????????··414Discussion????????????????????????????????????????????·444．1Evalutionmethodsandindexofsaline—alka
4、linetoleranceinrice???????????qq4．2Therelationshipbetweengerminatonandseedlingstageonsaline‘a(chǎn)lkalinetolerance????454．3Identi6cationofnortheastjaponicaricegerrnplasmonsaline。alkalinetolerance??????-·464．4QTLmappingoftherelatedtraitsunderthesaline—alkailinstressinric
5、e??????????．．405Conelusion????????????????????????????????????????????485．1Identificationofnortheastjaponicaricesaline-alkailinetoleranceatgerminationstage??4萏5．2Identificationofnortheastjaponicaricesaline—alkailinetoleranceatseedlingstage???485．3Identificationconc
6、entrationandindexofsaline·alkalinetoleranceinrice?????????·485．4Geneticlinkagem印construction???????????????????????495．5QTLscontrollingsaline—alkailinetolerancerelatedtraitsinrice??????????4yAcknowledgement????????????????????????????????????????50References???????
7、??????????????????????????”51PublishedscientincpaperiⅡmasterperiod??????????????????????????·59前言1前言1．1．研究的目的與意義水稻(OryzaSativa)是全世界的主要糧食作物之一，全世界約有一半以上的人口以大米為主食。根據(jù)(FAO)聯(lián)合國糧農(nóng)組織統(tǒng)計數(shù)據(jù)庫顯示，中國水稻種植面積占世界的18．75％，位居于世界第二，僅次于印度，而中國的水稻總產(chǎn)量居世界第一，占世界水稻總產(chǎn)量的28．96％lIJ。因此，在我國的糧食作物生產(chǎn)中水稻
8、生產(chǎn)具有相當(dāng)重要的地位，提高水稻高產(chǎn)、優(yōu)質(zhì)的生產(chǎn)能力，對保障我國糧食安全具有重要的戰(zhàn)略意義【2J。黑龍江省是粳稻的主產(chǎn)區(qū)，是我國粳稻種植面積最大的省份，種植面積約為391萬hm2，總產(chǎn)量占全國總量的7．91％，達(dá)到1518萬噸，因此，黑龍江省寒地粳稻在我國糧食生產(chǎn)中占有舉足輕重的地位，直接
