ORIGINAL RESEARCH
Diallel Analysis and Selection of Hybrids for Nutritional Phytochemicals in Capsicum Annuum L.
 
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1
Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706
 
2
Department of Agroforestry and Environment, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
 
3
School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia
 
4
Department of Environmental Sciences, Shaheed Benazir Bhutto University Sheringal, Dir Upper, Khyber Pakhtunkhwa 18000, Pakistan
 
5
Department of Agriculture, Guru Nanak Dev University, Amritsar-143005, Punjab, India
 
6
Department of Horticulture, Faculty of Agriculture, Siirt University, Kezer, Siirt, Turkey
 
7
Department of Plant Production, College of Food and Agriculture, King Saud University, Riyadh 11451, Saudi Arabia
 
8
Department of Agronomy, Faculty of Agriculture, University of Kafrelsheikh, 33516, Egypt
 
9
Siirt University, Faculty of Agriculture, Department of Field Crops, Siirt 56100, Turkey
 
 
Submission date: 2023-08-30
 
 
Final revision date: 2023-12-05
 
 
Acceptance date: 2024-01-10
 
 
Online publication date: 2024-02-29
 
 
Publication date: 2024-06-27
 
 
Corresponding author
Ayman El Sabagh   

Department of Agronomy, Faculty of Agriculture, University of Kafrelsheikh, 33516, Egypt, Egypt
 
 
A. K. M. Aminul Islam   

Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706
 
 
Pol. J. Environ. Stud. 2024;33(5):5017-5026
 
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ABSTRACT
Chili (Capsicum annuum L.) is an important functional food due to its main bioactive compound, capsaicin, and other nutritional phytochemicals. However, very few studies have been conducted to develop hybrids with a high content of nutritional phytochemicals. The present study involving six parents was conducted to identify superior hybrids with higher nutritional quality based on combining ability and heterosis following Griffing’s diallel Method II Model I. A broad spectrum of genetic variation among the six parents and fifteen F1 hybrids was confirmed by analysis of variance. (H1/D)0.5 value indicated that partial dominance gene action controlled all the traits except capsaicin and total phenolic content. Based on general combining ability (GCA) results, parent P3 (PLP-2s) was the best general combiner for all the traits except K and Na, followed by the parents P6 (BU Capsicum 1), P5 (Morich-8), P4 (Chili Japan) and P1 (Red Chili). Specific combining ability (SCA), along with heterotic response, revealed that the F1 hybrid P3×P6 (PLP-2s × BU Capsicum 1) was the best hybrid, followed by the hybrids P4×P6 (Chili Japan × BU Capsicum 1) and P3×P4 (PLP-2s × Chili Japan), as they exhibited superiority for major nutritional components, such as capsaicin and ascorbic acid. Ultimately, the subsequent selection of the F1 hybrids would help develop better nutritional-quality hybrids.
eISSN:2083-5906
ISSN:1230-1485
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