The influence of different levels of adjusted fat thickness (AFT) and HCW slaughter end points (covariates) on estimates of breed and retained heterosis effects was studied for 14 carcass traits from serially slaughtered purebred and composite steers from the US Meat Animal Research Center (MARC). Contrasts among breed solutions were estimated at 0.7, 1.1, and 1.5 cm of AFT, and at 295.1, 340.5...

The study was carried out to estimate magnitude of heterosis over better parent and standard check for some important characters in 15 crosses resulting from a half diallel mating design of 6 inbred lines of brinjal. Hybrid variety ‘Tarapuri’ was used as standard check. The parents and the hybrids were evaluated at the farm of Olericulture Division, HRC, BARI, during the winter season of 2008-2...

Sponge gourd is versatile summer vegetable having potential applications across many sectors. Twenty sponge genotypes were studied at the Department of Vegetable Science, College Agriculture, Vellanikkara, Kerala Agricultural University, Thrissur, for study variability in morphological, yield and biochemical traits. Significant difference existed among all characters under study. In general, Ph...

Resistance breeding is the most effective method to control northern corn leaf blight (NCLB). The objectives were (1) Assess effects of dominant genes (Ht(s)), polygene (PG), and their combinations disease rating (DR), number lesions per (NLPL), lesion size (LS); (2) Estimate genetic components, general combining abilities (GCA), heritability under two Line × Tester analyses; (3) Determine gene...

Retained heterosis for meat traits was estimated in F3 generation castrate males in three composite populations of beef cattle finished on two levels of dietary energy density (2.82 Mcal of ME and 3.07 Mcal of ME and 11.50% CP) and serially slaughtered at four end points at intervals of 20 to 22 d. Breed effects were evaluated in nine parental breeds (Red Poll [R], Hereford [H], Angus [A], Limo...

This study included four genotypes of cucumber (IC257296, IC420405, GYNE-5, PUSA SANYOG) which were evaluated based on phenotypic traits when grown under two different soil zones Doha (Qatar) and Meerut (India). Statistical analysis to estimate various genetic parameters like genotypic variance, coefficient variation (PCV GCV), broad sense heritability gain principal component (PCA) was done in...

Raspberry is a delicious fruit with important nutritional and health properties for consumers. The efficiency of achieving raspberry breeding aims such as productivity, quality, adequate response to stressors, etc., depends directly on knowledge the inheritance traits genetic factors influence their pragmatic use. In this study, main morphological characteristics chemical components fruits 24 g...

For 75 yr, Line 1 Hereford cattle have been at the forefront of beef cattle breeding research. The goal of this review is to provide an overview of scientific contributions made using the Line 1 Hereford population. It was initially developed as contribution to a western regional program from which beef producers were envisioned to use heterosis by crossing selected inbred lines. Whereas this v...

M A N Y hybrids between genetic pure lines in maize exhibit heterosis. The search for the genetic basis of heterosis has been carried on for many years and by many workers. Despite these efforts, an adequate, specific biochemical explanation of heterosis has not been presented. JONES (1952) has noted the interaction of nuclear genes and cytoplasm, as evidenced by differences in reciprocal cross...