Part of the success a breeding program depends on composition base population. Superior genotypes and unimproved dioecious varieties are sources genes for traits interest excellent options formation segregating populations. Here we describe first cycle recurrent selection (RS) in papaya propose an effective strategy, unprecedented crop, to generate variability new cultivars. Initially, RS popul...

ABSTRACT One hundred two single zoospore isolates of Phytophthora infestans, derived asexually from four parental isolates of US-8 genotype and one isolate of US-1 genotype, were characterized for their virulence phenotypes to determine changes in virulence during asexual reproduction. Potato differentials, each containing a major gene for resistance to P. infestans (R1 to R11), were used to ch...

Breeds of larger mature size tend to grow more rapidly and be older when attaining a given level of fatness. Hereford, Limousin, and Piedmontese are of approximately equal mature size and yet may vary in body composition at a given degree of maturity. However, direct comparisons among these three breeds were not found. Therefore, the objective of this research was to compare Hereford, Limousin,...

En la actualidad producción de quinua está limitada principalmente por falta variedades que tengan alto rendimiento con granos grandes, posean madurez uniforme y sean precoces bajo las condiciones edafoclimáticas del altiplano. La investigación selección líneas obtenidos hibridación, se realizó el objetivo seleccionar promisorias a partir autofecundaciones S5 cruzas simples una presión genética...

ABSTRACT Progenies from 69 crosses between parents obtained by recurrent selection for resistance and yield were inoculated with Moniliophthora perniciosa basidiospores. The symptoms evaluated compared those in the equally progenies of Catongo, SIC 23 SCA 6. Forty-three new did not differ statistically 6, while 10 better than this control. female that can be highlighted are (P4B x 6), (MA 16 (C...

In this study, the intergeneric hybrids F1, F2, BC1F1, BC1F2, and BC2F1 from Elytrigia elongata and Triticum aestivum crosses were produced to study their chromosome pairing behavior. The average E. elongata chromosome configuration of the two F1 hybrids agreed with the theoretical chromosome configuration of 21I+7II, indicating that the genomic constitution of this F1 hybrid was ABDStStEeEbEx....

MRL/MpJ (MRL) is a mouse model for autoimmune disease and develops ovarian cysts with age. The ovarian cysts originate from the rete ovarii, which is considered to be the remnant of fetal mesonephric tubules. In a previous study, we analyzed the genetic background of ovarian cysts by using backcross progenies between MRL and C57BL/6N (B6) mice. By interval mapping, suggestive linkages were dete...

Three doses each of Gamma – rays, EMS, NG, MH and in combination were administered to the seeds of morphologically and genetically distinct blackgram varieties, PU-30 and Sarala In M2 generation most treatment populations exhibited reduction in mean and increase in variance for all six quantitative traits and among the mutagens NG and combined treatments induced more variability in both the var...