Floral Biology of <i>Aquilaria sinensis</i> (Lour.) Spreng
2024
Bin Wang | Guangyao Ma | Suxian Lin | Xin He | Bo Chen | Haoling Li | Liangming Huang | Yun Yang | Jianhe Wei
<i>Aquilaria sinensis</i> (Lour.) Spreng is a known medicinal plant producing agarwood. To date, studies on the floral biology of <i>A. sinensis</i> have been limited. In this study, the floral micro- and ultra-structures, pollen viability, stigma receptivity, and artificial pollination of <i>A. sinensis</i> were investigated. The results show that the flower’s development can be divided into five stages, including the flower bud differentiation stage (2–7 d), the flower bud stage (7–13 d), the flowering stage (14 d), the pollination stage (14–15 d), and the fruiting stage (15–25 d). The floral organs mainly include: 4–6 split calyces, 10 petals, 10 stamens, and 1 pistil. The anther is oblong, with four pollen sacs the pollen is round, with maximum viability 6 h after flowering; and stigma receptivity is at its best 6 h before flowering. Artificial pollination is successful in the field. These findings will provide useful information for producing and breeding <i>A. sinensis.</i>
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