Variability in ratio between ear and plant height among maize top cross hybrids ear and plant height of maize top cross hybrids
نویسندگان
چکیده
In a large number of plant species, including maize, different phenotypic traits have undergone major changes through the breeding process, resulting in creation varieties and hybrids good agronomic performance. This study aimed to examine variability height (PH) uppermost ear (EH) maize top cross obtained from crossing 31 local landraces with three genetically divergent testers (L217, L73B013 L255/75-5). Top were tested two-year experiment, at four locations, two replicates. The grand mean for PH EH 255.8 cm 101.8 cm. Analysis variance showed that all sources variation (environment - year × location (E), landrace (B), tester effect (A), as well their interactions) highly significant (p≤0.01), except triple interaction (A B E). coefficients 4.76% 8.87%. A correlation was found between examined (r=0.785; p <0.01). Linear regression shows increase by 0.5 is followed 1 increase. Based on results, general combining ability (GCA) traits, under influence additive genes, i.e. tall per se crosses give inversely. production, trait interest small EH/PH ratio. Landraces MB1960, MB642 MB1890 best GCA given trait, so they can serve pre-breeding programmes.
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ژورنال
عنوان ژورنال: Selekcija i Semenarstvo
سال: 2022
ISSN: ['2406-209X', '0354-5881']
DOI: https://doi.org/10.5937/selsem2202001p