Floral Polychromatism and Female Fitness in Hermaphrodites of Garcinia gummi-gutta (L.) Roxb.

IF 0.5 4区 生物学 Q4 BIOLOGY
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引用次数: 0

Abstract

Garcinia gummi-gutta (L.) Roxb. is a tropical tree crop widely gaining attention due to the plenteousness of hydroxycitric acid (HCA), known for its anti-obesity and appetite-reducing activity. The declining male population, coupled with sexual complexity and floral diversity in fruit bearer, are challenging for natural pollination and hence require conservation of the germplasm. The investigation in this study focused on reproductive characterization, resource allocation, reproductive success, and male functionality could better explain the existing sexual system and its mode of reproduction. Great diversity in floral color of G. gummi-gutta specimens ranging from sulphur-yellow to crimson red in hermaphrodite compared to yellow-shaded male flowers was noticed in South Western Ghats. Analysis of variance (ANOVA) revealed significant variations in floral quantitative characters across the sexual forms. However, no direct association was evident with reproductive success explicitly across male and hermaphrodite flowers. The Student’s t-test among hermaphrodite and male sex morphs unveiled a significant mean difference in pollen germination, and pollination was further defined with correlation analysis. The negative association of pollen germination with the female trait, viz., seed production, shows a trade-off to female reproductive fitness in hermaphrodite flowers. The androdiecious nature of the species is agreed upon the presence of fertile pollen grains by the hermaphrodite trees, and the report is the first of our knowledge.

雌雄同体的花多色性和雌性体质
摘要 藤黄树(Garcinia gummi-gutta (L.) Roxb.)是一种热带乔木作物,因富含羟基柠檬酸(HCA)而广受关注。雄性种群的减少,加上结实果实的性复杂性和花的多样性,给自然授粉带来了挑战,因此需要保护种质资源。本研究的调查重点是繁殖特征、资源分配、繁殖成功率和雄性功能,这可以更好地解释现有的有性系统及其繁殖模式。在西高止山脉南部,G. gummi-gutta标本的花色差异很大,雌雄同体的花色从硫黄到深红色不等,而雄花的花色则为黄色。方差分析(ANOVA)显示,不同有性形态的花的数量特征存在显著差异。不过,雄花和雌花的繁殖成功率没有明显的直接联系。雌雄两性花之间的学生 t 检验揭示了花粉萌发率的显著平均差异。花粉萌发率与雌性性状(即种子产量)呈负相关,这表明雌雄同体花的雌性生殖能力之间存在权衡。该物种的雄花两性花粉粒的存在证实了雌花两性花粉粒的存在,而该报告是我们所知的第一份报告。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Biology Bulletin
Biology Bulletin 生物-生物学
CiteScore
0.70
自引率
20.00%
发文量
84
审稿时长
4-8 weeks
期刊介绍: Biology Bulletin (Izvestiya Rossiiskoi Akademii Nauk – Seriya Biologicheskaya) is an interdisciplinary journal of general biology. It focuses on fundamental studies in the fields of cell biology, biochemistry, zoology, botany, physiology, and ecology. This journal publishes current materials of experimental studies and surveys on current problems in general biology. It also publishes information on scientific conferences and new books in the fields of general biology.
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