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1、玉米科學2007,15(3):99~102,106JournalofMaizeSciences文章編號:1005—0906(2007)03—0099—04玉米子粒灌漿速率的配合力分析閆淑琴,蘇俊,李春霞,龔士琛,宋錫章,李國良,扈光輝,王明泉(黑龍江省農科院玉米研究所,哈爾濱150086)摘要:試驗選用9份自交系,按格列芬雙列雜交方法Ⅱ設計。對4個階段灌漿速率配合力分析并結合產量對自交系和雜交組合進行綜合評價。結果表明:第1、Ⅱ、Ⅲ、Ⅳ期灌漿速率的配合力自交系間有較大差異;同一自交系及同一自交系的不同雜交種4個時期的灌漿速率也有較大差異。
2、HR705自交系4個階段均較低;Mo17第1、Ⅱ期較低,第Ⅲ、Ⅳ期較高;HR11前3期較高,第Ⅳ期較低;黃早四4期均高;HR304前兩期較低,后兩期較高;丹340I期較低,其它3期均高;HR1124期均高;K10第1、Ⅱ期最高,Ⅲ、Ⅳ期較低;HR106的4期均較低。灌漿速率一般配合力高的自交系其特殊配合力也較高,一般配合力低的自交系也有特殊配合力較高的組合出現(xiàn),因此有必要重視特殊配合力。關鍵詞:玉米;子粒;灌漿速率;配合力中圖分類號:S513.024文獻標識碼:ACombiningAbilityofGrainFillingRateinMa
3、izeYANShu—qin,SUJun,LIChun-xia,GONGShi-shen,eta1.(MaizeResearchDepartmentofHeilon~iongAcademyofAgriculturalSciences,Harbin150086,China)Abstract:NineinbredlineswereusedtomatingcrossesbyGrifing’Sdesign2,thecombiningabilityofgrainfilling,thecorrelationwithyieldwereanalyzed.T
4、hemainresultsarediscussedinthefolowing:Thesignificantdifer—encesofcombiningabilityofgrainfilingwereobservedamonginbredlinesinthefourstagesofgrainfiling.Therewerealsohavesignificantdiferencesinthesameinbredlineandhybridamongthefourstagesofgrainfiling,inbredHR705waslowerina
5、llofthefourstages.InbredMo17hadlowercombiningabilityatthestageIandstage1I,buthavinghighercombiningabilityatthestagemandstage1V.ThecombiningabilityofinbredHR11washigherinthefirst3stagesandlowerinthelaststage.InbredHuangzaosihadhighercombiningabilityinallofthefourstages.In—
6、bredHR304hadhighercombiningabilityinthefirst2stagesandlowercombiningabilityinthelaterstages.ThecombiningabilityofinbredDan340wasloweratthestageIandhigheratotherstages.ThecombiningabilityofinbredHR112washigherinallofthefourstages.ThecombiningabilityofinbredKIOwasloweratthe
7、stageIandstageⅡ.higheratthestagemandstageIV.InbredHR106hadlowercombiningabilityinallofthefourstages.Thespecialcombiningabilityoffillingratewashigherinthelineswithhighergeneralcombiningabilityoffilingrate.Therewerealsomanyhybridswithhigherspecialcombiningabilitybutthegener
8、alcombiningabilityoftheirparentswaslower.Weshouldpaymuchattentiontospecialcombiningabilityintheb