Development of Biotic Stress Resistant Cowpea

Mahesha, H. S.; Keerthi, M. C.; Shivakumar, K. V.; Bhargavi, H. A.; Saini, Ravi Prakash; Manjunatha, L.; Hickok, D.; Blair, Matthew W.

doi:10.1007/978-3-030-91043-3_4

Cited by 4 publications

(3 citation statements)

References 84 publications

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“…In China, large-scale areas of cowpeas have been planted in greenhouses and open fields to meet consumers’ demand and increase farmers’ income ( Huan et al, 2016 ). Cowpea favours high temperatures and humid climates and therefore easily infested and damaged by various plant diseases ( Mahesha et al, 2022 ); as a result, fungicides are often overused by farmers to guarantee cowpea yield and quality, potentially producing dietary exposure risks ( Duan et al, 2016 , Zhang et al, 2022 ). Although a series of strict measures have been taken to reduce the use of pesticides in cowpeas, it is still a vegetable with serious issues regarding pesticide residues ( Cui et al, 2023a ).…”

Section: Introductionmentioning

confidence: 99%

Dissipation, accumulation, distribution and risk assessment of fungicides in greenhouse and open-field cowpeas

Cui,

Ma,

Zhao

et al. 2024

Food Chemistry: X

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Section: Introductionmentioning

confidence: 99%

Dissipation, accumulation, distribution and risk assessment of fungicides in greenhouse and open-field cowpeas

Cui,

Ma,

Zhao

et al. 2024

Food Chemistry: X

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“…At storage, seed deterioration rate is determined by molecular and physiological responses (Nagel et al 2016;Renard et al 2020;Zhou et al 2020), in uenced by the water content of the seed (Kameswara Rao et al 2017), and by abiotic factors such as relative humidity, temperature, and the packaging (Wang et al 2012;Fazeli-Nasab et al 2022). In addition, biological factors such as viruses, fungi, and insects accelerate seed viability and vigor loss (Parisi et al 2013;Bueso et al 2017;Mahesha et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Overcoming Hancornia speciosa seed recalcitrance: harvest season and storage time

Souza

Nunes

Freitas

et al. 2022

Preprint

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Storage of desiccation-tolerant seeds is one of the most effective germplasm conservation strategies; however, several species of tropical and subtropical humid forests have seeds that are sensitive to desiccation, and recalcitrant seeds, making conservation a challenge. Recalcitrant seeds deteriorate during storage due to high respiration rates and metabolic activity, and protocols employing osmoprotective solutions aim to minimize those effects to maintain seed viability for a more extended period. Hancornia speciosa, a fruit tree considered a priority for research in Brazil, is a desiccation-sensitive species. Thus, this study aimed to assess the physiological parameters of viability, vigor, and enzymatic activity of H. speciosa seeds stored in an osmoprotective solution. Germination percentage, water content, electrical conductivity, shoot, root, seedling length, peroxidase activity, and heat-resistant protein concentration were determined for seeds collected during summer and winter harvests. In addition, gene sequences were explored through gene ontology using Blast analysis to identify the biological and molecular processes associated with enzymatic action during storage. Summer-collected seeds performed better in viability and vigor and are recommended for storage in the osmoprotective solution. After being stored in the solution, seeds collected in the winter improved germination and vigor. H. speciosa seeds harvested in the summer or winter and stored in the osmoprotective solution remain viable for up to 90 days. Peroxidase and heat-resistant proteins are active; these enzymes' expression regulation should be investigated in future studies.

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“…Cowpea leaf miner is among the most important insect pest species that feed on cowpea (Mahesha et al, 2022). Females of this pest lay eggs on cowpea leaves and the larvae that result from them, feeding on the mesophyll tissue, which causes leaf drops (Soltan et al, 2020).…”

Section: Leaf Minermentioning

confidence: 99%

Rabbit urine and sunflower oil reinforced tephrosia-based formulation for cowpea insectpests management in Singida, Tanzania

Matle

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Insect pests are a major problem in cowpea production. Synthetic pesticides are used to control; however, are non-friendly to human and diversity of organisms. These negative effects raise farmers' interest in botanical pesticides due to less harmful effects on the ecosystem. Tephrosia vogelii extracts, rabbit urine, and sunflower oil were assessed for synergistic effects against cowpea field’s insectpest’s including aphids, pod borer, leaf miner, and beneficial insects. The ingredients were combined in ratio of 10% (w/v) Tephrosia Vogelii (T), 50% (v/v) rabbit urine (U), and 10% (v/v) of sunflower oil (O), while unsprayed plots and synthetic pesticide (Lambda- cyhalothrin 2.5 EC) were control negative and positive, respectively. The experiment was laid down in randomized complete block design (RCBD) with three replications. Spraying was done weekly where abundances for insects were recorded a day before next schedule. Results showed significant difference P≤0.001 in insect pest counts between treatments. The positive control exhibited smaller mean number (4.3 ± 0.3 d, 4.7±0.3 a and 5.0±0.6 a), followed by combined formulation OUT at a mean (11.0 ± 0.6 c, 8.0±0.6 b, and 4.3±0.3 a) for aphid, leaf miner, and pod borer respectively compared to negative control and individual ingredients (O, U and T) evidencing synergy. The results also indicated the combined formulation (Oil, rabbit urine and Tephrosia) OUT showed comparable yield of (846.1 kg/ha) with control positive (794.6 kg/ha) while uncombine formulation and negative control showed lower yield of 520.6 kg/ha, 611.1 (kg/ha), 662.2 kg/ha, and 483.3 kg/ha respectively. Based on the results, OUT-formulation exhibits synergy for managing cowpea’s insectpest’s, however study on cost-benefit is recommended.

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Development of Biotic Stress Resistant Cowpea

Cited by 4 publications

References 84 publications

Dissipation, accumulation, distribution and risk assessment of fungicides in greenhouse and open-field cowpeas

Dissipation, accumulation, distribution and risk assessment of fungicides in greenhouse and open-field cowpeas

Overcoming Hancornia speciosa seed recalcitrance: harvest season and storage time

Rabbit urine and sunflower oil reinforced tephrosia-based formulation for cowpea insectpests management in Singida, Tanzania

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