Genetic analysis for fruit biochemical traits (capsaicinoids and carotenoids) and dry fruit yield in chilli (Capsicum annuum L.)

Ponnam, Naresh; Rao, V. Keshava; Reddy, B Lavanya; Reddy, C Anand; Venkatachalapathi, V.; Reddy, K. Madhavi

doi:10.1016/j.indcrop.2016.10.006

Cited by 10 publications

(4 citation statements)

References 20 publications

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“…We found highly significant differences for all studied traits. Significant differences among chilli pepper genotypes were also reported [23][24][25][26][27]. In the present study, the GCA and SCA variance was significant (p ≤ 0.01) for all studied traits.…”

Section: Discussionsupporting

confidence: 69%

Diallel Analysis of Chilli Pepper (Capsicum annuum L.) Genotypes for Morphological and Fruit Biochemical Traits

Aiswarya

Vijeth

Sreelathakumary

et al. 2019

Plants

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Chilli pepper is commercially cultivated as a spice and is also used for the extraction of a colouring agent. Here, we performed a diallel genetic study involving five chilli pepper varieties. Parents and their hybrid were evaluated for fifteen morphological and five biochemical traits over two crop seasons under open field conditions. Variation was recorded for all of the studied traits. Similarly, significant values for general combining ability (GCA) and specific combining ability (SCA) variance were obtained for all of the traits. The ratio of σ 2 SCA/σ 2 GCA indicates that non-additive gene effects were predominant for all the studied traits except for fruits plant −1 . Based on SCA effects, cross combinations P2 × P5, and P4 × P5 were determined excellent for flesh thickness, yield components and vitamin C. These hybrids are recommended for multilocation testing to assess their suitability for commercial cultivation. Overall, this work presents useful information regarding the genetics of important morphological and biochemical traits in chilli pepper.

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Section: Discussionsupporting

confidence: 69%

Diallel Analysis of Chilli Pepper (Capsicum annuum L.) Genotypes for Morphological and Fruit Biochemical Traits

Aiswarya

Vijeth

Sreelathakumary

et al. 2019

Plants

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“…We found a significant difference among the parents and their hybrids for all characters studied. Naresh et al [43] earlier reported significant differences among chilli genotypes. Significant differences among genotypes were reported also reported by Rodrigues et al [44] and Geleta and Labuschagne [45] for various fruit and yield traits in chilli pepper.…”

Section: Discussionmentioning

confidence: 96%

“…Singh et al [48] observed the predominance of additive gene effects for fruit weight, fruit width, fruit length and days to flowering. Naresh et al [43] reported that the mean sum of squares due to genotypes, parents and hybrids, and parent vs hybrids were highly significant for fruit length, fruit width, dry yield plant -1 and total carotenoids. Similar to our results of high values of GCA and SCA.…”

Section: Discussionmentioning

confidence: 99%

Appraisal of Genetics and Heterosis of Important Traits in Chilli Pepper Cultivated under the Influence of Chilli Leaf Curl Virus Disease

Vijeth¹,

Sreelathakumary²,

Rafeekher³

et al. 2019

Preprint

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Chilli leaf curl virus (ChiLCV) is a severe threat to the successful cultivation of the chilli peppers. Besides, the genetics and heterosis for important traits under the influence of ChiLCV infestation is not well studied. Therefore here, were crossed seven genotypes (lines) with high yield and quality attributes with four highly resistant genotypes (testers) in a line (L) × tester (T) mating design to produce 28 F1 hybrids. Parents and their hybrids were evaluated for yield attributes and ChiLCV resistance. All the four testers were symptomless and among seven lines, two were moderately resistant and five were moderately susceptible to the ChiLCV. Among 28 F1 hybrids, 12 showed a moderate resistant reaction, 11 were moderately susceptible and five susceptible to the ChiLCV disease. Based on per se performance, most promising hybrid combinations were L3 × T2, L6 × T1, and L3 × T1 for yield attributes. Whereas the superior crosses for ChiLCV resistance based on heterobeltosis, standard heterosis and specific combining ability test (SCA) effects were L6 × T1 and L7 × T3. Lines and testers showed significant differences for all the characters except for the plant height. The general combining ability (GCA) effects for testers were significant for all the traits except for days to first harvest. The ratio of σ2GCA/σ2SCA indicated the predominance of non-additive gene effects in the inheritance of traits studied in this experiment. The contribution of lines was more compared to testers for all the characters except for primary branches plant-1. Overall, this study provides valuable information regarding the genetics and heterosis in chilli with respect to ChiLCV infestation

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“…However, the growth and yield of chilli pepper are severely impeded by multiple environmental stresses, including drought, heat, salinity, and a broad spectrum of pathogens, including fungi, bacteria, viruses, nematodes, and insects (Vijay et al, 2023). Drought is particularly detrimental, notably when it occurs during the flowering stage, leading to reduced fruit setting and diminished capsaicin content in peppers (Kopta et al, 2020, Anjum et al, 2012, Naresh et al, 2016). In response, chilli plants have evolved complex regulatory mechanisms at the morphological, physiological, and molecular levels to combat drought stress (Yu et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Enhancing drought tolerance in chilli pepper through AdDjSKI‐mediated modulation of ABA sensitivity, photosynthetic preservation, and ROS scavenging

Bulle,

Venkatapuram,

Rahman

et al. 2024

Physiologia Plantarum

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Drought stress threatens the productivity of numerous crops, including chilli pepper (Capsicum annuum). DnaJ proteins are known to play a protective role against a wide range of abiotic stresses. This study investigates the regulatory mechanism of the chloroplast‐targeted chaperone protein AdDjSKI, derived from wild peanut (Arachis diogoi), in enhancing drought tolerance in chilli peppers. Overexpressing AdDjSKI in chilli plants increased chlorophyll content, reflected in the maximal photochemical efficiency of photosystem II (PSII) (Fv/Fm) compared with untransformed control (UC) plants. This enhancement coincided with the upregulated expression of PSII‐related genes. Our subsequent investigations revealed that transgenic chilli pepper plants expressing AdDjSKI showed reduced accumulation of superoxide and hydrogen peroxide and, consequently, lower malondialdehyde levels and decreased relative electrolyte leakage percentage compared with UC plants. The mitigation of ROS‐mediated oxidative damage was facilitated by heightened activities of antioxidant enzymes, including superoxide dismutase, catalase, ascorbate peroxidase, and peroxidase, coinciding with the upregulation of the expression of associated antioxidant genes. Additionally, our observations revealed that the ectopic expression of the AdDjSKI protein in chilli pepper plants resulted in diminished ABA sensitivity, consequently promoting seed germination in comparison with UC plants under different concentrations of ABA. All of these collectively contributed to enhancing drought tolerance in transgenic chilli plants with improved root systems when compared with UC plants. Overall, our study highlights AdDjSKI as a promising biotechnological solution for enhancing drought tolerance in chilli peppers, addressing the growing global demand for this economically valuable crop.

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Genetic analysis for fruit biochemical traits (capsaicinoids and carotenoids) and dry fruit yield in chilli (Capsicum annuum L.)

Cited by 10 publications

References 20 publications

Diallel Analysis of Chilli Pepper (Capsicum annuum L.) Genotypes for Morphological and Fruit Biochemical Traits

Diallel Analysis of Chilli Pepper (Capsicum annuum L.) Genotypes for Morphological and Fruit Biochemical Traits

Appraisal of Genetics and Heterosis of Important Traits in Chilli Pepper Cultivated under the Influence of Chilli Leaf Curl Virus Disease

Enhancing drought tolerance in chilli pepper through AdDjSKI‐mediated modulation of ABA sensitivity, photosynthetic preservation, and ROS scavenging

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