Indian Society of Genetics & Plant Breeding

Evaluation of male sterility-based chilli hybrids for tolerance to high temperature and resistance to seedling blight

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Chilli (Capsicum annuum L.) is one of the most important
commercial crops of India. It is also valued for its
industrial (oleoresin extraction) product. Productivity of
chilli is low in the months of March to June in summer
season because, high temperature causes flower and
fruit drop and hence poor fruit set. Fruit set in chilli
particularly sensitive to the high night temperatures.
Ideal night temperature for fruit set in chilli is between
18.33oC and 26.66oC. At 38oC a large decrease in pollen
fertility and germination is observed as compared to
33oC [1]. Fruit is unable to set between 32 and 38oC
[2]. If day temperature exceeds 35oC, pollen abort and
the fruitset is reduced. Two species, namely
Colletotrichum capsici and C. gloeosporioides are the
known causes of anthracnose in chilli [3] of which
Colletotrichum capsici is more important [4]. It causes
the symptoms namely dieback and fruit rot. The fungus
is known to be seed borne and can cause death of
seedling and reduces the vigor of infected seedlings
[5]. Fungicides are mainly used to manage the disease.
Hence, present study was with an objective to identify
suitable cytoplasmic male sterility (CMS) based hybrid
for high temperature tolerance as well as resistance to
seedling blight

Keywords: N/A


Year: 2011
Volume: 71
Issue: 4
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906


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