Studies on antioxidants and peroxidase isoenzymes in seedlings of twelve cultivars with four different durations of flowering time in pigeon pea (Cajanus cajan (L.) Millspaugh)

Botcha, Satyanarayana; Prattipati, Subhashini Devi; Anshu, Arundhati; Jyothi, H. K.

doi:10.1016/j.fra.2013.05.010

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…Concerning the crop phenology, although the same varieties were the earliest and the latest (ICPL 20338 and ICPL 20092, respectively) at both trial locations, they flowered earlier at Farakoba than at Kouentou (Table 3). This difference was attributable to the fact that pigeon pea is photosensitive and a short-day plant (Botcha et al, 2013). Seeds were sown on 8 th September for the trial at Farakoba during short-day period, favourable to the plant growth, whereas at Kouentou, seeds were sown on 15 th July; while days were longer, delaying plant flowering (Jeuffroy and Ney, 2007).…”

Section: Discussionmentioning

confidence: 99%

Morpho-phenological characteristics of exotic pigeon pea genotypes in western Burkina Faso

Ouattara,

Konate,

Ouattara

et al. 2023

Afr. Crop Sci. J.

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Pigeon pea (Cajanus cajan L.) is an important legume and multi-use crop, which contributes to food and nutritional security in sub-Saharan Africa (SSA). This crop, however, remains less popular and is thus underutilised in west Africa. The objective of this study was to characterise the morphological and phenological features of exotic pigeon pea genotypes in western Burkina Faso in order to provide an entry point for the breeding programme. The study was conducted at two sites, namely Farakoba and Kouentou, located in western Burkina Faso, involved seven exotic genotypes, namely ICP-15029, ICP-14722, ICP-8863, ICPL-20338, ICPH-2740, ICPH-2438 and ICPL-20092, sourced from ICRISAT, India. Also, two local accessions (FKB Cc1 and FKB Cc2) were included as controls. Results showed that semi-spreading (80% of the genotypes) and indeterminate growth habit (80% of the genotypes) were dominant in the genetic materials, with regards to branching pattern and growth habit, respectively. The genotypes including the two checks, were distinguished by three seed colours, viz. brown (three genotypes), dark brown (four genotypes) and grey (two genotypes). There were highly significant differences among the genotypes for phenological (P<0.001) and morphological (P<0.001) traits. The earliest genotype to flower at both sites was ICPL-20338; while the latest was ICPL-20092. A principal component analysis based on the quantitative traits showed that the first two PCs explained 91.78% of the total variation among the genotypes. The most significant contributor traits were stem diameter, leaf size, 50% flowering and plant height. Cluster analysis grouped the genotypes into five clusters.

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Section: Discussionmentioning

confidence: 99%

Morpho-phenological characteristics of exotic pigeon pea genotypes in western Burkina Faso

Ouattara,

Konate,

Ouattara

et al. 2023

Afr. Crop Sci. J.

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Defensive Mechanisms in Cucurbits against Melon Fly (Bactrocera cucurbitae) Infestation through Excessive Production of Defensive Enzymes and Antioxidants

et al. 2021

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Melon fly (Bactrocera cucurbitae) is the most common pest of cucurbits, and it directly causes damage to cucurbit fruits in the early developmental stage. The infection of fruit tissues induces oxidative damage through increased generation of cellular reactive oxygen species. The effects of melon fly infestation on the production of defensive enzymes and antioxidant capabilities in five cucurbit species, namely, bottle gourd, chayote, cucumber, snake gourd, and bitter gourd, were investigated in this study. The total phenolic and flavonoid content was considerably higher in melon fly infestation tissues compared to healthy and apparently healthy tissues. The chayote and bottle gourd tissues expressed almost 1.5- to 2-fold higher phenolic and flavonoid contents compared to the tissues of bitter gourd, snake gourd, and cucumber upon infestation. Defensive enzymes, such as peroxidase (POD), superoxide dismutase (SOD), polyphenol oxidase (PPO), and catalase (CAT), were high in healthy and infected tissues of chayote and bottle gourd compared to bitter gourd, snake gourd, and cucumber. The activity of POD (60–80%), SOD (30–35%), PPO (70–75%), and CAT (40–50%) were high in infected chayote and bottle gourd tissue, representing resistance against infestation, while bitter gourd, snake gourd, and cucumber exhibited comparatively lower activity suggesting susceptibility to melon fly infection. The antioxidant properties were also high in the resistant cucurbits compared to the susceptible cucurbits. The current research has enlightened the importance of redox-regulatory pathways involving ROS neutralization through infection-induced antioxidative enzymes in host cucurbit resistance. The melon fly infestation depicts the possible induction of pathways that upregulate the production of defensive enzymes and antioxidants as a defensive strategy against melon fly infestation in resistant cucurbits.

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Studies on antioxidants and peroxidase isoenzymes in seedlings of twelve cultivars with four different durations of flowering time in pigeon pea (Cajanus cajan (L.) Millspaugh)

Cited by 2 publications

References 33 publications

Morpho-phenological characteristics of exotic pigeon pea genotypes in western Burkina Faso

Morpho-phenological characteristics of exotic pigeon pea genotypes in western Burkina Faso

Defensive Mechanisms in Cucurbits against Melon Fly (Bactrocera cucurbitae) Infestation through Excessive Production of Defensive Enzymes and Antioxidants

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