HETEROSIS AND COMBINING ABILITY STUDIES FOR YIELD AND HORTICULTURAL TRAITS IN BELL PEPPER (Capsicum annuum L. var. grossum Sendt.) UNDER PROTECTED ENVIRONMENT
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Date
2011
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CSK Himachal Pradesh Krishi Vishavavidyalaya, Palampur
Abstract
The present investigation entiled “Heterosis and combining ability studies for yield and
horticultural traits in bell pepper (Capsicum annuum L. var. grossum Sendt.) under protected
environment” was carried out in 25×10 m modified naturally ventilated polyhouse during summerautumn,
2012 and 2013 in Randomized Block Design having three replications to ascertain the
quantum of genetic variability available in the bell pepper genotypes, gather information regarding
the type of gene action and identify potential parental lines and cross combinations for protected
environment on the basis of combining ability and magnitude of heterosis for different traits, viz.,
days to 50 per cent flowering, days to first harvest, number of marketable fruits per plant, pericarp
thickness (mm), lobes per fruit, fruit length (cm), fruit width (cm), average fruit weight (g),
marketable fruit yield per plant (kg), plant height (cm), harvest duration (days), ascorbic acid
content (mg/100g) and capsaicin content (%). High estimates of PCV and GCV were observed for
number of marketable fruits per plant, marketable fruit yield per plant, ascorbic acid content and
capsaicin content indicating the presence of substantial variability for the traits and thereby
ensuring ample scope for improvement of these traits through phenotypic selection. The high
estimates of heritability coupled with high estimates of genetic advance (as per cent of mean) were
observed for marketable fruit yield per plant, number of marketable fruits per plant and ascorbic
acid content, which indicated the importance of additive gene action for the inheritance of these traits.
On the basis of hybrid vigour, the cross combinations viz., Kashmir Sel-1 (L2) × Solan Bharpur
(T1), ARCH-19 (L1) × Solan Bharpur (T1) and UHFSP(Y)-11 (L11) × Yolo Wonder (T3) were
observed to be potential crosses exhibiting highly significant standard heterosis for marketable fruit
yield per plant and most of its component traits. The cross combinations viz., ARCH-19 (L1) ×
Solan Bharpur (T1), DARL-10 (L9) × California Wonder (T2) and UHFSP(Y)-11 (L11) × Yolo
Wonder (T3) were the top three crosses which exhibited good specific combining ability effects,
maximum desirable heterosis and per se performance in respect of marketable fruit yield per plant
and number of marketable fruits per plant and can be further exploited for genetic improvement of
bell pepper. For all the traits studied, there was preponderance of non-additive gene action which
reaffirms the importance of hybrids in bell pepper.
Description
Doctoral Dissertation
Keywords
##Unable to generate tags mayanglambam bilashini veg_ sc_ phd.pdf, Bell Pepper, ##Unable to generate tags mayanglambam bilashini veg_ sc_ phd.pdf, Protected environment, ##Unable to generate tags mayanglambam bilashini veg_ sc_ phd.pdf, vegetable Science