A mutant of Neurospora crassa fails to produce perithecia when crossed as either the male (fertilizing) parent or the female (protoperithecial) parent. This mutant is unique in that it appears to be due to a single mutation that blocks sexual development when crossed as either parent. As either a male or female parent, the mutant, fmf-1, produces perithecia blocked at a diameter of 120 microns ...

In order to understand the molecular basis of chicken heterosis in reproduction traits, mRNA differential display (DDRT-PCR) methods were used to analyze the differential gene expression of ovary tissue between hybrids and their parental lines in a 4×4 diallel cross, involving 4 chicken breeds, which were White Plymouth Rock (E), CAU Brown (D), Silkies (C) and White Leghorn (A). Total of 331 di...

The study aimed to show the best effect of general combining ability (GCA) and specific (SCA) for parents their hybrids studied traits. included two main successive seasons. In first season, cherry tomato pure lines were selected that introduced from Tomato Genetics Resource Center (TGRC) at University California, Davis in USA, 5 which most genetically Distant are (LA4451, LA4753, LA3334, LA122...

The present investigation was carried out to obtain information based on per se performances of parents and their combinations for genetic improvement in tomatoes. Ten promising genotypes were crossed a dial manner (excluding reciprocals). Half diallel set 45 F1’s tomato evaluated Randomized Complete Block Design (RBD) with three replications eighteen yield attributing traits during Rabi 2020-2...

We construct a verbal and graphical theory (the "fecundity-limitation hypothesis") about how constraints on the brooding space for embryos probably truncate individual fecundity in male-pregnant and female-pregnant species in ways that should differentially influence selection pressures for multiple mating by males or by females. We then review the empirical literature on genetically deduced ra...

in this research, during three consecutive years (2010-2012), a series of diallel crossing was performed among wild type barberry genotypes and iranian seedless barberry. setting of seed and fruit in the crossing have been studied and then seedling survival were evaluated in several cultural systems. results showed significant effects of pollen sources on setting of fruits, seed and seeded frui...

An experiment was conducted to estimate the genetic variability, heritability and advance in 100 wheat genotypes including ten parents 45 F1 F2 for obtained through half diallel mating design pea during 2021-22 at Oil Seed Farm, Kalyanpur, C.S. Azad University of Agriculture Technology, Kanpur-208002 (U.P.) Quantitative analysis were carried out all parameters which are directly or indirectly a...

Data were collected from 366 litters produced in a four-breed (Duroc, Yorkshire, Spotted and Landrace) diallel mating system. Purebred and crossbred litters were farrowed during five consecutive (fall and spring) farrowing seasons (fall 1976 through fall 1978). Litters were produced by randomly mating boars of each breed to at least one female of each breed. Litter size and weight at birth, lit...

Reciprocal selection is a breeding procedure for population improvement and hybrid development. Both female and male parents contribute genes to their offspring, but the influence of female parent often extends beyond simple genetic transmission. Nine parents were crossed in a full diallel and evaluated for maternal genetic effects for resistance to rice yellow mottle virus disease. This study ...