منابع مشابه
Population Genetic Diversity in a Maize Reciprocal Recurrent Selection Program
to selection for yield has increased through Cycle 11, while genetic variance within populations showed a The genetic structures of the Iowa Corn Borer Synthetic #1 (CB) nonsignificant decrease. and Iowa Stiff Stalk Synthetic (SS) maize (Zea mays L.) populations are important because these populations serve as the model for develLabate et al. (1997) evaluated several measures of opment of moder...
متن کاملBalanced Reciprocal Translocation in A Case of Recurrent Miscarriage
Reciprocal translocation carriers have reduced fertility, increased risk of spontaneous abortion or unbalanced karyotype in their offspring. Here, we report the inheritance of a translocation between chromosomes 12 and 16 in a family with a history of five consecutive blighted ova and an offspring with three cell lines of different genotypes. We assessed parental karyotypes and identified a het...
متن کاملUse of molecular markers in reciprocal recurrent selection of maize increases heterosis effects.
We examined the effect of incorporation of molecular markers on variability between and within populations in order to maximize heterotic effects and longevity of a maize reciprocal recurrent selection program. Molecular variability was quantified by inter-simple sequence repeat (ISSR) markers between and within the maize populations Cimmyt and Piranão in the 10th cycle of a reciprocal re...
متن کاملFull-sib reciprocal recurrent selection in the maize populations Cimmyt and Piranão.
We estimated the genetic gains of the 12th cycle of reciprocal recurrent selection for maize traits of agronomic interest. We used 23 ISSR molecular markers in an attempt to maximize genetic variability among and within populations based on selection of S(1) progenies. To this end, 138 full-sib families were evaluated in a randomized block design in two environments (the municipalities of...
متن کاملReciprocal recurrent selection effects on the genetic structure of tropical maize populations assessed at microsatellite loci
A modified reciprocal recurrent selection (RRS) method, which employed one cycle of high-intensity selection, was applied to two tropical maize (Zea mays L.) populations, BR-105 and BR-106, originating the improved synthetics IG-3 and IG-4, respectively. In the present study the effects of this kind of selection on the genetic structure of these populations and their synthetics were investigate...
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ژورنال
عنوان ژورنال: Hereditas
سال: 2010
ISSN: 0018-0661
DOI: 10.1111/j.1601-5223.1956.tb03025.x