CAJ | 학술논문

采用裂区试验设计，密度为主区，品种为副区。在3?0，4?5，6?0，7?5，9?0，10?5万株／hm26个密度下，对昌7－2及其4个遗传改良系和郑单958及4个Reid×塘四平头模式杂交种进行耐密性分析。结果表明：昌7－2和4个遗传改良系中，昌7－53（NC7－53＝8?99）和昌7－2（NC7－2＝7?82）的耐密性较好，昌7－40（NC7－40＝6?45）及昌7－60（ NC7－60＝4?44）耐密性一般，昌7－83（ NC7－83＝2?50）的耐密性最差；郑单958及4个Reid×塘四平头强优势模式杂交种中，吉农玉5853（ NJNY5853＝9?79）和郑单958（ NZD958＝8?38）的耐密性较好，吉农玉5840（ NJNY5840＝6?21）耐密性一般，吉农玉5860（ NJNY5860＝5?55）和吉农玉5883（ NJNY5883＝5?05）的耐密性较差。昌7－53是改良较成功的自交系，并且由其组配的吉农玉5853具有耐密植的潜力。
채용렬구시험설계，밀도위주구，품충위부구。재3?0，4?5，6?0，7?5，9?0，10?5만주／hm26개밀도하，대창7－2급기4개유전개량계화정단958급4개Reid×당사평두모식잡교충진행내밀성분석。결과표명：창7－2화4개유전개량계중，창7－53（NC7－53＝8?99）화창7－2（NC7－2＝7?82）적내밀성교호，창7－40（NC7－40＝6?45）급창7－60（ NC7－60＝4?44）내밀성일반，창7－83（ NC7－83＝2?50）적내밀성최차；정단958급4개Reid×당사평두강우세모식잡교충중，길농옥5853（ NJNY5853＝9?79）화정단958（ NZD958＝8?38）적내밀성교호，길농옥5840（ NJNY5840＝6?21）내밀성일반，길농옥5860（ NJNY5860＝5?55）화길농옥5883（ NJNY5883＝5?05）적내밀성교차。창7－53시개량교성공적자교계，병차유기조배적길농옥5853구유내밀식적잠력。
In this study, split?plot experimental design was used, density?based districts were main districts, and inbred lines and variety?based districts were deputy districts. Under 3?0, 4?5, 6?0, 7?5, 9?0, 10?5×104 plants/hm2, density tolerance of chang 7-2,its 4 genetically improved lines, and zhengdan 958 and 4 Reid × tangsipingtou pattern hybrids was analyzed. Results showed that a?mong chang 7-2 and its 4 genetically improved lines, chang 7-53( NC7-53=8?99) and chang 7-2 ( NC7-2=7?82) have better density tolerance, chang 7-40( NC7-40=6?45) and chang 7-60( NC7-60=4?44) have ordinary density tolerance, and chang 7-83 (NC7-83=2?50) has the worst density toler?ance; Zhengdan 958 and 4 hybrids according to strong heterosis of Ried × tangsipingtou pattern showed that jinongyu 5853( NJNY5853=9?79) and zhengdan 958( NZD958=8?38) have better density tolerance, jinongyu 5840(NJNY5840=6?21) has ordinary density tolerance, jinongyu 5860(NJNY5860=5?55) and jinongyu 5883( NJNY5883=5?05) have worse density tolerance. Chang 7-53 is a successful?ly improved inbred line and its hybrid jinongyu 5853 has the potential for density resistance.