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Flowering plants are known to exhibit vast diversity of sexual systems encompassing bisexual, monoecious and dioecious conditions. Dioecy offers opportunities to explore separately the male and female programmes giving an insight to the evolutionary, developmental and molecular processes leading to separate mechanisms for sex expression. Mechanisms controlling sex can either be genetic or epigenetic...
Sclerotinia blight, caused by soil-borne fungus Sclerotinia minor Jagger, is one of the destructive diseases in groundnut. Pathogen affected plants usually displays lesions, wilt and collapse which cause high yield losses. Traditional field screening is time and resources consuming. Molecular markers associated with resistance genes offer an alternative selection technique which...
The use of germplasm as source of resistances to biotic stresses represents an important strategy in pepper in order to improve susceptible cultivars and release new resistant varieties. The study of the relationships among genotypes within germplasm collections is useful for genetic improvement as well as for the management of genetic resources. In the present study, 59 accessions belonging to nine...
Powdery mildew (Pm), caused by Blumeria graminis f. sp. tritici (Bgt), is one of the most serious diseases of common wheat (Triticum aestivum L.) in many regions of the world. Rapid loss of resistance caused by pathogen virulence requires continual improvement of Pm resistance through utilization of novel resistance genes. Pm07J126, in wheat line 07jian126, is a dominant resistance gene, conferring...
A set of 63 rice blast pathogen, Magnaporthe oryzae isolates from different cultivars in different rice growing regions of Eastern India was surveyed for the presence of nine known avirulence genes, Avr-Piz-t, Avr-Pita,ACE1, Avr-Pia, Avr-Pit,Avr1-CO39, Avr-Pi7, Avr-Pi15 and Avr-Pik with gene-specific molecular markers. These genes were detected with varying frequencies. Avr-Piz-t and Avr-Pik had...
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