Impact of Microclimate Modification on Okra Cultivation:  A Global Review

Budania, Yogendra Kumar; Dahiya, Harender Singh

doi:10.20546/ijcmas.2018.710.045

Cited by 2 publications

(2 citation statements)

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“…Okra requires a long, warm and humid growing climate for better yield. It is sensitive to frost and extremely low temperatures [ 15 ], with an optimal temperature range of 21–30°C, maximum temperature of 35°C and a minimum of 18°C [ 15 ]. Okra requires well-drained sandy loam soil, with a pH between 5.8–6.5.…”

Section: Introductionmentioning

confidence: 99%

Seed production system and adaptability of okra (Abelmoschus esculentus L.) cultivars in Buea, Cameroon

et al. 2022

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Okra is grown globally for its nutritional and economic benefits. Okra seeds ensure continuous production of the crop but challenges of poor production, adaptability and management may not allow the seeds to express their full potential. There are two seed production systems in Cameroon; the informal and formal. In Buea, the informal seed system is used by most farmers for seed production/utilization and farmers are reluctant to use hybrid seeds. This study aimed to assess the informal seed system of okra and evaluate the adaptability of seed produce from informal and formal systems in Buea. A survey and a field experiment were carried out. The designs for the survey and field experiment were stratified random sampling and randomized complete block design respectively. Data collection for the survey was done using questionnaires and other data collection instruments, while for the field experiment, data was collected on germination, vegetative growth parameters, incidence and severity of pests / diseases and yield. Data analysis for the survey was done using descriptive statistics, while data from the field experiment was done using a two-way ANOVA test and treatment means compared using the Tukey test at 5% probability. Results from the survey showed that women (60%) were mostly involved in seed production by mass selection from two landraces identified. Preservation of seeds was mostly done with the use of wood ash (58%) and insects were the major postharvest pest (76%). For the field experiment, at 66 DAP, Yellen recorded the highest significant number of leaves (13.417), leaf area (771.4 cm2) and the number of branches (5.64). Clemson spineless recorded the highest significant incidence (89.9%) and severity for pests / diseases while Kirikou and Landrace recorded the least incidence (0.0%) and severity. Kirikou recorded the highest significant yield (6.0 tons/ha), followed by Landrace (5.3 tons/ha). These findings reveal the performance of the landrace and provide reasons why farmers in Buea are reluctant to use hybrid okra seeds. The Landrace should certainly have adaptable genes, coupled with the autogamous nature of okra which encourages inbreeding for homozygous traits, which are dominant in expression compared to heterozygous traits.

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Section: Introductionmentioning

confidence: 99%

Seed production system and adaptability of okra (Abelmoschus esculentus L.) cultivars in Buea, Cameroon

et al. 2022

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“…However, Pakistan's average okra production is lower than that of many comparable nations (Abd El-Fattah et al, 2020). Poor cultural practices, insects, pests, and disease, as well as a lack of excellent quality seed, might indeed contribute to Pakistan's lower yield (Budania and Dahiya, 2018).…”

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confidence: 98%

Combining Ability and Genetic Analysis of Morphological and Yield Related Traits in Abelmoschus esculentus L.

Rasheed,

Ali,

Jan

et al. 2024

SJA

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O kra is a vegetable widely grown in hot and subtropical regions. It is a major crop in Pakistan, but average yields are low compared to other countries (Bhatt et al., 2015). Farmers begin growing the Kharif crop in January as an off-season early crop in order to gain high prices, despite the fact that it is a warm season. For the Kharif crop to function at its best, high soil temperatures as well as high daytime Abstract | The present study was conducted to assess combing ability and genetic analysis in Okra. Twentyeight okra genotypes (5x5 diallel crosses) and checks were screened for high yield and early maturity in a randomized complete block design. Highly significant differences were observed for most traits, except stem diameter and marketable fruit diameter. Among genotypes, G10 flowered earliest (41.5 days), G22 had longest internodes (3.59cm), G16 had heaviest fruits (9.65g), and G14 had longest and thickest marketable fruits (13.8 cm, 1.74cm). Combing ability analysis revealed that non-additive gene action was involved in controlling all traits. Non-additive gene action was important for all traits, and P2 and P3 were good general combiners. G8 and G14 were superior crosses due to high per se performance and significant SCA effects. Heritability analysis suggested that the selection of the studied traits should not be based on phenotypic performance. A heterosis study revealed that most of the crosses outperform the checks, and hence could be used in future okra breeding programs. The estimated inbreeding depression revealed that the majority of the traits showed negative inbreeding depression due to selfing, thus least affected by selfing. Thus from our study G8, G14 and G23 could be identified as the best-performing crosses for yield-associated traits. Hence should be involved in a variety of development programs to improve the quantitative and related traits of Abelmoschus esculentus L.

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Impact of Microclimate Modification on Okra Cultivation: A Global Review

Cited by 2 publications

References 21 publications

Seed production system and adaptability of okra (Abelmoschus esculentus L.) cultivars in Buea, Cameroon

Seed production system and adaptability of okra (Abelmoschus esculentus L.) cultivars in Buea, Cameroon

Combining Ability and Genetic Analysis of Morphological and Yield Related Traits in Abelmoschus esculentus L.

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