منابع مشابه
Self-incompatibility: How to Stay Incompatible
Plant self-incompatibility is controlled by different genes for the recognition reactions of pollen and stigmas, yet correct association of the two genes have been maintained in two Brassica species.
متن کاملEffect of training brief self-regulation couple therapy on marital satisfaction of incompatible couples
Couple therapy is among the therapeutic methods used for solving couples’ marital problems. Brief self-regulation couple therapy is one of the many different methods used for couple therapy. This study was conducted to determine the effect of training brief self-regulation couple therapy on couples’ marital satisfaction. The research method was two-group quasi-experimental with pretest and post...
متن کاملInbreeding depression in small populations of self-incompatible plants.
Self-incompatibility (SI) is a widespread mechanism that prevents inbreeding in flowering plants. In many species, SI is controlled by a single locus (the S locus) where numerous alleles are maintained by negative frequency-dependent selection. Inbreeding depression, the decline in fitness of selfed individuals compared to outcrossed ones, is an essential factor in the evolution of SI systems. ...
متن کاملSequence variability and developmental expression of S-alleles in self-incompatible and pseudo-self-compatible petunia.
We investigated the structure and expression of three S-alleles of Petunia hybrida in self-incompatible varieties and in a pseudo-self-compatible line in which the self-incompatibility response is defective. Comparison of derived amino acid sequences from different gametophytic S-alleles revealed a pattern of sequence conservation and variability that was highly nonrandom. In self-incompatible ...
متن کاملEnhancing Cocoa Beans Quality through Improved Cultural Practices in Major Cocoa Producing States of Nigeria
In West Africa, low adoption of agricultural innovations by farmers has been partly due to the complexity of the innovation structure or new knowledge beyond the farmers’ socio-economic adaptive capacities. Different attempts have been made to improve cocoa beans quality in Nigeria among which was the recommendation of ‘improved cultural practices’ or ‘best known practices’ (ICMP). This had rec...
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ژورنال
عنوان ژورنال: Nature
سال: 1960
ISSN: 0028-0836,1476-4687
DOI: 10.1038/187170a0