Gac is a dioecious tropical and perennial climber. The fruit is a rich source of carotenoids and is used in traditional cuisine and medicine. Improving propagation methods using simple techniques would increase production and improve conservation in regional areas. This study evaluated temperature requirements for seed germination, the use of rooting hormones to strike female cuttings and the grafting of female scions onto seedling rootstock. Seed germination was optimised between 25 and 35 °C, with a maximum germination percentage of 91% at 30 °C. However, increasing storage time from 6 to 18 months under laboratory conditions (21 ± 1°C and 60% relative humidity) reduced germination and this was associated with seed weight loss, highlighting the need to develop storage guidelines, particularly for the higher temperature and humidity conditions where Gac is grown. Survival of softwood cuttings was improved from 53 to 77% with indole-3-butyric acid (IBA) (3–5 g/L) and semi-hardwood cuttings did not require IBA treatment. Both splice and wedge grafting techniques achieved a survival rate > 53% and with the youngest rootstock (4 and 8 weeks) this increased to > 85%. Further work could investigate the production potential of crops using cuttings and grafted plants.

中文翻译：

---

改进的 GAC (Momordica Cochinchinensis Spreng.) 繁殖方法

Gac 是一种雌雄异株的热带和多年生登山者。这种水果富含类胡萝卜素，用于传统美食和医药。使用简单的技术改进繁殖方法将增加产量并改善区域的保护。本研究评估了种子萌发的温度要求、使用生根激素撞击雌性插条以及将雌性接穗嫁接到幼苗砧木上。种子发芽在 25 至 35 °C 之间进行了优化，在 30 °C 时最大发芽率为 91%。然而，在实验室条件（21 ± 1°C 和 60% 相对湿度）下将储存时间从 6 个月增加到 18 个月会降低发芽率，这与种子重量损失有关，强调需要制定储存指南，特别是对于生长 Gac 的较高温度和湿度条件。使用吲哚-3-丁酸 (IBA) (3–5 g/L) 将软木插条的存活率从 53% 提高到 77%，而半硬木插条不需要 IBA 处理。拼接和楔形嫁接技术均实现了 > 53% 的存活率，并且对于最年轻的砧木（4 周和 8 周），存活率增加到 > 85%。进一步的工作可以研究使用插条和嫁接植物的作物生产潜力。