for investigation quantitative and qualitative properties of different lines and cultivars of rapeseed, 19 selected lines from advanced inbreeding progenies, and zarfam variety (as check), totally 20 lines and varieties, were evaluated in a randomized complete block design with three replications at the experimental field of seed and plant improvement institute in karaj, during 2005-6. morpholo...

grapes are among the world most planted horticultural crops. since the last century, attempts have been made to improve the quality of grapes in the world. meanwhile, the necessity of having knowledge about the history of progenies families led to the link between genealogy and breeding. considering some previous mislabeling, in order to find out the accuracy of the controlled crosses as well a...

The magnitude of inbreeding depression within populations is important for the evolution and maintenance of mixed mating systems. However, data are sparse on the magnitude of inbreeding depression in Robinia pseudoacacia. In this study, we compared differences in the mature seed set per fruit, seed mass, germination success, and seedling growth between self- and cross-pollination treatments and...

in the present study, twenty two selected lines from eleven iranian eggplant (solanum melongena l.) landraces along with varamin landrace, as control, were studied in a randomized complete block design with three replications in three locations (karaj, varamin and dezful). sum of yield and marketing score for each line was recorded. analysis of variance for yield showed significant differences ...

Background: This review aims to discuss alternatives for obtaining new clones of eucalyptus ( Eucalyptus spp.) with greater efficiency than current methods, as well the feasibility hybrid seeds. The commercial-scale use seeds may reduce implantation costs and bring other advantages forest exploitation. proposal focuses on using inbred progenies (S 1, S 2...S g) improve species. Self-fertilizati...

Breeding cassava relies on several selection stages (single row trial-SRT; preliminary; advanced; and uniform yield trials-UYT). This study uses data from 14 years of evaluations. From more than 20,000 genotypes initially evaluated only 114 reached the last stage. The objective was to assess how the data at SRT could be used to predict the probabilities of genotypes reaching the UYT. Phenotypic...

Diploid clones of the hybrid acacia (Acacia mangium × A. auriculiformis) are widely planted in Vietnam because their high productivity, adaptability, and commercial wood yields. Polyploid breeding offers possibilities for further enhancing vigor generating new value genotypes. In a field trial, we compared three diploid with respective colchicine-induced tetraploid lines. Flowering seed product...

DOBZHANSKY, SPASSKY and TIDWELL ( 1963) have reported experiments on the effects of inbreeding on the egg to adult viability in progenies of Drosophila pseudoobscura females collected in several places in Arizona and California. As expected, the inbred progenies were less viable than the outbred ones, and the greater degree of inbreeding (brother-sister mating) gave a greater reduction of the v...