Articles
Phenotyping of wild species and development of interspecific hybrids for resistance against Chilli leaf curl virus disease in chilli
Article number
1384_33
Pages
251 – 258
Language
English
Abstract
Chilli (Capsicum annuum L.) is a most important vegetable and spice crop for farmers globally.
Daily consumer demand for chilli has increased in the recent past as chillies are used every day by large populations in the world.
Quality fruit production of chillies is highly vulnerable to biotic stresses especially Chilli leaf curl virus disease (ChiLCD) in India.
In order to select resistant lines from the germplasm, we undertook phenotyping of 50 accessions of Capsicum species viz., Capsicum annuum, C. frutescence, C. baccatum, C. baccatum var. pendulum, C. chinense, C. chacoense and C. tovari against ChiLCD under natural and artificial epiphytotic conditions for two crop seasons 2020-21 and 2021-22 at ICAR-NBPGR, New Delhi.
Three accessions viz., EC772795 (C. baccatum), EC787133 (C. baccatum) and EC787119 (C. frutescens) were found to be highly resistant to ChiLD under both natural epiphytotic and artificially challenged conditions with disease incidence of 3 and 5% and disease severity grade 1 of the scale.
Whereas, four accessions EC790579 (C. chacoense), EC772732 (C. chinense), EC787141 (C. chinense) and EC790590 (C. tovari) showed resistant reaction.
The identified resistant accessions have been utilized to develop successful interspecific crosses between Capsicum species.
Three interspecific crosses namely, C. chinense × C. frutescens (2% DI), C. chinense × C. annuum (2%) and C. tovari × C. annuum (5% DI) exhibited highly resistant reaction to ChiLCD with disease severity grade 1, two crosses C. tovari × C. chinense (10%), C. tovari × C. frutescens (16% DI), C. frutescens × C. tovari (20%) and C. frutescens × C. annuum (22% DI) showed resistant reaction to ChiLCD with disease severity grade 2. Their mapping population would be developed to map genomic regions conferring resistance to biotic stresses and to study the genetics of ChiLCD and anthracnose resistance.
Stable sources of resistance to these stresses have direct use in chilli improvement programmes to develop cultivars/hybrids.
Daily consumer demand for chilli has increased in the recent past as chillies are used every day by large populations in the world.
Quality fruit production of chillies is highly vulnerable to biotic stresses especially Chilli leaf curl virus disease (ChiLCD) in India.
In order to select resistant lines from the germplasm, we undertook phenotyping of 50 accessions of Capsicum species viz., Capsicum annuum, C. frutescence, C. baccatum, C. baccatum var. pendulum, C. chinense, C. chacoense and C. tovari against ChiLCD under natural and artificial epiphytotic conditions for two crop seasons 2020-21 and 2021-22 at ICAR-NBPGR, New Delhi.
Three accessions viz., EC772795 (C. baccatum), EC787133 (C. baccatum) and EC787119 (C. frutescens) were found to be highly resistant to ChiLD under both natural epiphytotic and artificially challenged conditions with disease incidence of 3 and 5% and disease severity grade 1 of the scale.
Whereas, four accessions EC790579 (C. chacoense), EC772732 (C. chinense), EC787141 (C. chinense) and EC790590 (C. tovari) showed resistant reaction.
The identified resistant accessions have been utilized to develop successful interspecific crosses between Capsicum species.
Three interspecific crosses namely, C. chinense × C. frutescens (2% DI), C. chinense × C. annuum (2%) and C. tovari × C. annuum (5% DI) exhibited highly resistant reaction to ChiLCD with disease severity grade 1, two crosses C. tovari × C. chinense (10%), C. tovari × C. frutescens (16% DI), C. frutescens × C. tovari (20%) and C. frutescens × C. annuum (22% DI) showed resistant reaction to ChiLCD with disease severity grade 2. Their mapping population would be developed to map genomic regions conferring resistance to biotic stresses and to study the genetics of ChiLCD and anthracnose resistance.
Stable sources of resistance to these stresses have direct use in chilli improvement programmes to develop cultivars/hybrids.
Authors
V.K. Sharma, A. Srivastava, M. Mangal, C.D. Pandey, V.P. Sharma, R.K. Gautam, J. Rana, A. Kumar
Keywords
chilli, species, characterisation, ChiLCD, interspecific hybrids
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