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Physiological factors affecting purple passion fruit (Passiflora edulis f. edulis) post-storage seed germination

文献类型： 外文期刊

作者： Wang, Ye 1 ; Zhang, Xiao-Ying 1 ; Teng, Yao 1 ; Zhang, Zi-Xiong 1 ; Wang, Jian-Hua 3 ; Long, Xiu-Qin 1 ;

作者机构： 1.Guizhou Acad Sci, Guizhou Bot Garden, Guiyang 550001, Peoples R China

2.Key Lab Natl Forestry & Grassland Adm Biodivers Co, Guiyang 550001, Peoples R China

3.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Haikou 571101, Peoples R China

关键词： antioxidant enzyme activity; germination percentage; plant hormones; passion fruit; seed storage

期刊名称：SEED SCIENCE AND TECHNOLOGY （ 影响因子：3.0； 五年影响因子：1.9 ）

ISSN： 0251-0952

年卷期： 2025 年 53 卷 2 期

页码：

收录情况： SCI

摘要： Passiflora edulis f. edulis is recognised as an important tropical and subtropical fruit with cold resistance and desirable flavor. The relationship between seed storage and germination remains unclear. This study evaluated the germination characteristics, antioxidant enzyme activity, and hormone contents of purple passion fruit seeds stored at 20 +/- 5 degrees C for up to three years. The moisture content of the seeds varied between 8.3 and 8.9%, with both water absorption and germination percentage significantly decreasing over time. the seeds underwent considerable peroxidation reactions during storage, while auxin (IAA), zeaxanthin (ZT), gibberellin (GA), abscisic Acid (ABA), jasmonates (JA) and salicylic acid (SA) remained low at the third year. Overall, storage negatively impacts germination of purple passion fruit seeds. Reduced water absorption and low hormone levels, particularly gibberellin, may critically inhibit cellular activity. Friction can be employed to disrupt the outer seed coat and enhance water absorption. Alternatively, the application of exogenous gibberellic acid may alter the balance of hormone metabolism and improve germination percentage. It is recommended that for breeding using purple passion fruit as a parent, a simultaneous harvesting and sowing method may increase the yield of hybrid offspring.

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