Physiological characterization of leaf-shape isolines of upland cotton

IF 2 3区农林科学 Q2 AGRONOMY

Agronomy Journal Pub Date : 2024-12-31 DOI:10.1002/agj2.70005

William W. Spivey, Ricardo St. Aime, Taylor Sherer, Paul Zimmerman, Vasu Kuraparthy, Sruthi Narayanan

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Abstract

Four major leaf shapes exist in tetraploid cotton (Gossypium hirsutum L.): normal, sub-okra/sea-island, okra, and super-okra. The majority of upland cotton (G. hirsutum) varieties in the United States possess a normal leaf shape. However, the other three leaf shapes were reported to show a few production advantages such as accelerated flowering rates, early maturity, reduced lint trash and boll rot, and increased pest resistance. In this study, we evaluated the leaf-shape isolines LA-213-okra, LA-213-normal, LA-213-super-okra, and LA-213-sub-okra for physiological traits related to yield and performance and identified the isolines associated with superior physiological mechanisms. During flowering stage, narrow leaf shape isolines, LA-213-okra and LA-213-super okra, showed 6%–19%, 0%–15%, and 3%–73% greater chlorophyll index, quantum efficiency of photosystem II, and photosynthetic rate, respectively, than the LA-213-normal and LA-213-sub-okra isolines. Further, the water use of LA-213-super-okra was 12%–22% lower than that of the other three leaf shape isolines. With superior physiological performance, the okra and super-okra leaf shapes offer useful trait variation for cotton breeding and variety development.

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来源期刊

Agronomy Journal 农林科学-农艺学

CiteScore

4.70

自引率

9.50%

发文量

265

审稿时长

4.8 months

期刊介绍： After critical review and approval by the editorial board, AJ publishes articles reporting research findings in soil–plant relationships; crop science; soil science; biometry; crop, soil, pasture, and range management; crop, forage, and pasture production and utilization; turfgrass; agroclimatology; agronomic models; integrated pest management; integrated agricultural systems; and various aspects of entomology, weed science, animal science, plant pathology, and agricultural economics as applied to production agriculture. Notes are published about apparatus, observations, and experimental techniques. Observations usually are limited to studies and reports of unrepeatable phenomena or other unique circumstances. Review and interpretation papers are also published, subject to standard review. Contributions to the Forum section deal with current agronomic issues and questions in brief, thought-provoking form. Such papers are reviewed by the editor in consultation with the editorial board.