Research Article

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This research was carried out at the Agriculture Research Farm, Khyber Pakhtunkhwa Agricultural University, Peshawar, and the Cereal Crops Research Institute, Pirsabak, Nowshera, during 2009 and 2010. Half-sib families (HS) derived from the maize variety Pahari in spring crop seasons 2009 and 2010 were developed at the Cereal Crops Research Institute. All HS families were detasseled well ... more

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M. Riaz; J. Farooq; G. Sakhawat; A. Mahmood; M.A. Sadiq; M. Yaseen
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Compound inflorescence; Genetic components; Heritability; Phaseolus vulgaris; Plant breeding

The number of pods per common bean plant is a primary component of grain yield, which depends on the number of flowers produced and on the flower set. Thus, a larger number of flowers per plant would increase yield. Lines with inflorescences that had a large number of flowers compared to common bean plants now under cultivation were identified. We analyzed the genetic control of this ... more

S.R. Guilherme; M.A.P. Ramalho; deF.B. Abreu; L.A. Pereira
05/30/2014
Beef cattle; Censored records; Fertility; Heritability; Reproduction

The continuous trait age at subsequent rebreeding (ASR) was evaluated using survival analysis in Nellore breed cows that conceived for the first time at approximately 14 months of age. This methodology was chosen because the restricted breeding season produces censored data. The dataset contained 2885 records of ASR (in days). Records of females that did not produce calves in the ... more

M.H. Van Melis; L.G.G. Figueiredo; H.N. Oliveira; J.P. Eler; G.J.M. Rosa; M.L. Santana; F.M. Rezende; J.B.S. Ferraz
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The objective of this study was to estimate variance components and genetic parameters for accumulated 305-day milk yield (MY305) over multiple ages, from 24 to 120 months of age, applying random regression (RRM), repeatability (REP) and multi-trait (MT) models. A total of 4472 lactation records from 1882 buffaloes of the Murrah breed were utilized. The contemporary group (herd-year- ... more

R.C. Sesana; F. Baldi; R.R.A. Borquis; A.B. Bignardi; N.A. Hurtado-Lugo; E. Faro; L.G. Albuquerque; H. Tonhati
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Beef cattle; Heritability; Selection; Tropics; Weights

(Co)variance components and genetic parameters were estimated for body weights of an elite Brahman herd under a designed, supervised management and genetic program, including strategic artificial insemination (AI). Restricted maximum likelihood methods were used with a univariate animal model for birth weight (BW) and a bivariate model for weaning weight (205-day weight, 205W) and 18 ... more

D. Plasse; O. Verde; J. Arango; L. Camaripano; H. Fossi; R. Romero; C.Rodriguez M.; J.L. Rumbos
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Capsicum annuum; Gene action; Heritability; Meloidogyne incognita; Monogenic inheritance; Resistance

Root-knot nematodes of the genus Meloidogyne are important pathogens affecting vegetable crop production in Brazil and worldwide. The pepper species Capsicum annuum includes both hot and sweet peppers; very little emphasis has been placed on breeding sweet peppers for nematode resistance. We report on the inheritance of resistance to Meloidogyne incognita ( ... more

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03/28/2002
Asparagus officinalis L.; Heritability; Parent-offspring regression method; Selective criteria

To estimate the heritability values of characters frequently used as selective criteria, 32 half-sib families obtained from selected plants of three populations of the asparagus variety Argenteüil were evaluated in a randomized complete block design. The following characters were measured: days to emergence of the first spear, number and diameter of spears, number of stalks, plant ... more

V. Cravero; E. Cointry; I. Gatti; F.López Anido
09/30/2004
Carcass traits; Cattle; Heritability; Slaughter end points

We present estimates of heritability for carcass traits of cattle published in the scientific literature. Seventy-two papers published from 1962 to 2004, which reported estimates of heritability for carcass traits, were reviewed. The unweighted means of estimates of heritability for 14 carcass traits by slaughter end point (age, weight, and fat depth) were calculated. Among the three end ... more

A.Ríos Utrera; L.Dale Van Vleck
08/07/2007
Correlation; Genetic; Growth; Heritability

(Co)variance components and genetic parameters were estimated for body weights of a Romosinuano herd located in Sinú Valley, Cordoba, Colombia. Restricted maximum likelihood methods were used with a univariate animal model for birth weight, weaning weight (270 days), 16-month weight (480 days), weaning daily gain, and post-weaning daily gain. Models included random animal direct and maternal ... more

R.M. Sarmiento; J.P. Garcia

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