Demand for galactomannan gum from guar, commonly known as guar gum, has exponentially increased in the last few decades due to increased use in oil and natural gas, food, cosmetics, paper and other industries. The United States of America is the major importer of the guar gum in the world, which is mainly grown in deserts of India and Pakistan. There is need to increase guar production in non-traditional areas to ensure steady supply and reduce market volatility. Expanding guar acreage into cooler regions of the southern High Plains or in similar agroclimatic regions of the world is an attractive option. Therefore, a study was conducted in incubators to assess genetic variations among currently available guar cultivars for germination and early growth under cooler temperature ranges. Six temperatures (13, 16, 19, 22, 25, and 28 °C) and six guar cultivars (Kinman, Lewis, Matador, Monument, Santa Cruz and Judd 69) were used. Guar cultivars exhibited significant variations for germination percentage, mean germination time and seed vigor index under lower temperatures, which narrowed as the temperature increased closer to optimum. Mean seed germination percentage of cultivars reached maximum at 22 °C. However, speed of germination and seed vigor indices, which are indicators of quick and uniform establishment of guar in the field, continued to increase till 28 °C. Kinman, which was the most promising guar cultivar under cooler temperature, reached maximum germination percent at 16 °C and had the lowest germination time and highest seed vigor index among cultivars below 16 °C. In contrast, Matador reached maximum germination at 26 °C. Germination and early seedling traits indicate that it is better to plant guar in warm soils and if needed to plant in cooler conditions, cultivars like Kinman should be used.

过去几十年来，由于在石油和天然气，食品，化妆品，造纸和其他行业中的使用增加，瓜尔胶（通常称为瓜尔胶）对半乳甘露聚糖胶的需求呈指数增长。美国是世界上瓜尔豆胶的主要进口国，瓜尔豆胶主要生长在印度和巴基斯坦的沙漠中。需要增加非传统地区的瓜尔豆产量，以确保稳定的供应并减少市场波动。将瓜尔豆种植面积扩大到高原南部的凉爽地区或世界上类似的农业气候地区是一种有吸引力的选择。因此，在孵化器中进行了一项研究，以评估当前可用瓜尔豆品种之间的遗传变异，以便在较低温度范围内进行发芽和早期生长。六个温度（13、16、19、22、25，和28°C）和六个瓜尔豆品种（金曼，刘易斯，斗牛士，纪念碑，圣克鲁斯和贾德69）。瓜尔豆品种在较低温度下的发芽率，平均发芽时间和种子活力指数表现出显着差异，随着温度升高至最适温度而变窄。品种的平均种子发芽率在22°C时达到最大值。然而，发芽速度和种子活力指数（这是瓜尔瓜中瓜尔建立的快速而均匀的指标）一直持续到28°C。Kinman是低温下最有希望的瓜尔豆品种，在16°C时达到最高发芽率，在16°C以下的品种中发芽时间最短，种子活力指数最高。相比之下，斗牛士在26°C时达到了最高发芽率。