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The World Vegetable Center Okra ( Abelmoschus esculentus ) Core Collection as a Source for Flooding Stress Tolerance Traits for Breeding

Author

Listed:
  • Roland Schafleitner

    (The World Vegetable Center, Shanhua, Tainan 741, Taiwan)

  • Chen-Yu Lin

    (The World Vegetable Center, Shanhua, Tainan 741, Taiwan)

  • Ya-Ping Lin

    (The World Vegetable Center, Shanhua, Tainan 741, Taiwan)

  • Tien-Hor Wu

    (The World Vegetable Center, Shanhua, Tainan 741, Taiwan)

  • Cian-Huei Hung

    (Branch Station of Kaohsiung District Agricultural Research and Extension Station, Council of Agriculture, Executive Yuan, 2-6 Dehe Rd., Dehe Village, Changjhih Township, Pingtung County 90846, Taiwan)

  • Chooi-Lin Phooi

    (The World Vegetable Center, Shanhua, Tainan 741, Taiwan)

  • Shu-Hui Chu

    (The World Vegetable Center, Shanhua, Tainan 741, Taiwan)

  • Yu-Cen Jhong

    (The World Vegetable Center, Shanhua, Tainan 741, Taiwan)

  • Yun-Yin Hsiao

    (The World Vegetable Center, Shanhua, Tainan 741, Taiwan)

Abstract

Okra ( Abelmoschus esculentus ) is a heat tolerant vegetable crop with high economic and nutritional importance in parts of Asia, Africa, and America. The okra biodiversity held in gene bank collections could be mined for traits for breeding more stress tolerant and nutritional cultivars. An okra core collection of 166 accessions comprising A. esculentus , A. moschatus , A. caillei , and A. manihot has been assembled from the World Vegetable Center germplasm collection (840 accessions) based on diversity analysis with 20 microsatellite markers. A selection of A. esculentus accessions of the core collection (75 accessions) and 20 breeder-selected genotypes have been screened for variation of their response to flooding stress under field conditions using a high throughput phenotyping system. Growth increment per day and changes of physiological indices were measured before, during, and after application of 9 days of flooding stress. Several accessions showed only a small reduction in daily growth increment during flooding. Across the germplasm panel, maintained growth was correlated with maintained normalized differential vegetation index and was negatively correlated with plant senescence index. Accessions with maintained growth and health under flooding were selected for future further analysis and use in breeding.

Suggested Citation

  • Roland Schafleitner & Chen-Yu Lin & Ya-Ping Lin & Tien-Hor Wu & Cian-Huei Hung & Chooi-Lin Phooi & Shu-Hui Chu & Yu-Cen Jhong & Yun-Yin Hsiao, 2021. "The World Vegetable Center Okra ( Abelmoschus esculentus ) Core Collection as a Source for Flooding Stress Tolerance Traits for Breeding," Agriculture, MDPI, vol. 11(2), pages 1-13, February.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:2:p:165-:d:501202
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    References listed on IDEAS

    as
    1. Moosavi, Seyed Amir & Aghaalikhani, Majid & Ghobadian, Barat & Fayyazi, Ebrahim, 2018. "Okra: A potential future bioenergy crop in Iran," Renewable and Sustainable Energy Reviews, Elsevier, vol. 93(C), pages 517-524.
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