Two half diallel mating designs were conducted to study the inheritance of resistance to Colletotrichum acutatum Simmonds on runners of strawberry. The main design included six genotypes representing a range of responses to the pathogen: ‘Chandler’ (very susceptible); FL 87-210 (tolerant); MS/US 541 (very resistant); NC 92-01 (Fragaria chiloensis Duch.) (resistant); NCH 87-10 (tolerant-suscepti...

although inter-variety variability for salt tolerance has been reported in bread wheat plants, little information is available on the genetic control of ion contents and biomass yield under saline conditions. a diallel cross, including reciprocals of two salt tolerant, two moderately tolerant and two sensitive iranian and exotic bread wheat varieties, was analyzed to investigate the inheritance...

Definition of plant breeding, Sources of genetic variability Significance of genetic variability. Selection methods (SM). Factors affecting (SM). Heterosis & examples Hybridization crossing methods –inbreeding/ outcrossing. Convergent breeding, Divergent breeding. Evaluation of inbred lines by: Single crosses; 3-way crosses, Performing top crosses, Diallel analysis. Combining ability. General &...

A comparison among two forms of half-diallel analysis was made. The different half-diallel techniques used were Griffing's model I, method 2 and 4. These methods of diallel analysis were found to be interrelated. However, as Griffing's model I, method 4 partitioned heterosis into different components as well as gave information about combining ability and this method had certainly some advantag...

The aim of this study was to determine phenotypic and genotypic distances in parental lines of diallel population of sunflower, and to identify correlation between both distances with F1 performance, specific combining ability (SCA) and absolutely mid-parent heterosis. The morphological distance (Euclidean distance; EDs) and genetic distance (Jaccard`s distance; JD) among five sunflower parenta...

Sulfonylurea (SU) herbicides registered for use in other crops Australia may leave residues the soil interrupting rotations involving soybean. However, two unlinked genes (ALS1 and ALS2) confer SU tolerance Here, we report experiments that explored effectiveness of these ALS Australian soybean germplasm. The first assessed to halosulfuron-methyl or metsulfuron-methyl lines with either zero gene...

Present investigation was carried out during Zaid season 2019-2020 in (Y1) and 2020-2021 (Y2) at the Main Experimental Station (MES), Department of Vegetable Science, Acharya Narendra Deva University Agriculture & Technology, Nagar, Kumarganj, Ayodhya (U.P) with 21 genotypes six parental line their fifteen F1 hybrids bottle gourd by using diallel (excluding reciprocal) mating fashion. Exper...

The Drosophila bipectinata species complex belongs to the ananassae subgroup of the melanogaster species group (Genus Drosophila, Subgenus Sophophora). The members of the complex are: D. bipectinata, D. parabipectinata, D. malerkotliana, and D. pseudoananassae. Of the four species, D. bipectinata is most widely distributed. Females are indistinguishable, but males are distinguishable by their s...

We consider the offspring desertion as the optimal strategy for the deserter parent, analyzing a mathematical model for its expected reproductive success. It is shown that the optimality of the offspring desertion significantly depends on the offsprings' birth timing in the mating season, and on the other ecological parameters characterizing the innate nature of considered animals. Especially, ...