Sexual Reproduction Characteristics of Hedychium spicatum (Zingiberaceae)
College of Forestry, Southwest Forestry University, Kunming 650224, China
| Abstract: | The species Hedychium spicatum (Zingiberaceae) is Hedychium plant from high-altitude areas, with great ornamental and medicinal value. The species H. spicatum has two completely different types based on the stamens and anthers, which is very distinguished with other plants in the genus Hedychium. By analyzing its sexual reproduction pattern, it is helpful for advancing the breeding process of Hedychium and Zingiberaceae. In this paper, two types of H. spicatum (A and B) were used as the mother plants to study the pollen viability, stigma pollinability, fruiting, and germination by different pollination methods. The results showed that the pollen viability of the two types of H. spicatum was highest at the 1st day of flowering, 78.85% and 69.41% respectively, and then decreased sharply; the stigmas were all fertile during whole anthesis, with the strongest fertility at the 2nd day of anthesis. The fruiting, saturation, and germination rates were higher when cross-pollination treatment for intraspecific crosses between different two types and within type. The overlap period of fitness of stamens and pistils was relatively short for two types of H. spicatum. Intraspecific hybrids have a tendency to heterosis, and its reproduction requires the assistance of pollinators to some extent. |
| Keywords: | Hedychium spicatum; Pollen Vitality; Pollination Methods; Reproduction Characteristics |
| DOI: | 10.57237/j.jaf.2024.04.002 |
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Received: 4 September 2024
Accepted: 9 October 2024
Published Online: 5 December 2024
Funding
| 1. | 姜花属植物种质资源创新与利用 (110824061) |
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