study general and specific combining ability of traits in parental lines of hybrid rice
نویسندگان
چکیده
to determine the general and specific combining ability of the parental lines, five restorers and four male sterility lines were selected as lines and testers respectively. nine parental lines were crossed in a line × tester crossing system in year 2005 and the eight f1 hybrids and their six parents in randomized complete blocks design (rcbd (in two replications for yield, yield components and major qualitative characters. the effect of gca was negative and significant for grain yield in line no.2 (sepidrood), and in line sa14r, it was positive and significant for grain yield. the effect of sca was positive and significant for grain yield in four hybrids of ir58025a/ir62030r, ir79124a/ sa13r, ir79124a /sa14r and sa15a /sepidrood. two hybrids (ir79124a/ sa13r and ir79124a /sa14r) had the highest grain yield with 10.4 and 11.5 t/ha repectively. thes combinations were recommended for hybrid seed production in of gilan province.
منابع مشابه
evaluation of general and specific combining ability of rice lines
general and specific combining ability of five fertile male (lines) and two male sterile (tester) of rice were evaluated for 10 important morphological traits as well as yield and yield components in a randomized complete block design with three replications. results revealed that general combining ability effects were highly significant (p
متن کاملgeneral and specific combining ability and heterosis estimation of some cucumber lines for qualitative traits in partial diallel design
partial diallel design can be used to investigate the general and specific combining ability, and heterosis. combining ability and heterosis were studied in a 6×6 partial diallel cross to see the nature of gene action for fruit quality indices in cucumber (cucumis sativus l.) during 2007 to 2009. analysis of variance revealed highly significant differences among all the f1 hybrid means and thei...
متن کاملgeneral yield and specific combining ability and heterosis of some cucumber lines in partial diallel design
combining ability and heterosis were studied in a 6×6 partial diallel cross during 2007-2009 to see the nature of gene action in cucumber (cucumis sativus l.). analysis of variance revealed high significant differences among all the f1 hybrid means and among their respective six parental values for all the traits examined. the mean squares attributed to general combining ability (gca) and speci...
متن کاملEstimation of Genetic Parameters, General and Specific Combining Ability in Iranian Endemic Coriander Populations
In any breeding program, knowledge of the nature of gene action involved in the inheritance of traits is a basic requirement. In this research, diallel crosses progenies of six coriander landrace were evaluated in F1 and F2 generations. The genotypes were evaluated in different irrigation conditions in three separate experiments, in which each experiment was conducted in a randomized complete b...
متن کاملgeneral and specific combining ability for agronomic and seed quality traits in some inbred lines of sunflower
production of high yielding hybrid cultivars is among the main objectives of breeding programs in sunflower and on evaluation of the combining ability of the inbred lines necessary to select for the appropriate parental lines for production of hybrid cultivars. this study was conducted to investigate the general and specific combining ability and the mode of inheritance for agronomic and seed q...
متن کاملinteraction effects of general combining ability and specific combining ability with environment in virginia tobacco genotypes
to evaluate the effect of environment on the general and specific combining ability of virginia tobacco genotypes, five varieties were intercrossed in combination in 2007 in a half – diallel design. in 2008, the ten f1 population and the five parental lines were sown in two different conditions (drought stress and non-stress) using a complete randomized block design with three replications and ...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
کشاورزی (منتشر نمی شود)جلد ۹، شماره ۱، صفحات ۱-۱۳
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023