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首页> 外文期刊>Australian Journal of Crop Science >Pre-germination treatments in four prickly pear cactus (Opuntia sp.) species from Northeastern Mexico
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Pre-germination treatments in four prickly pear cactus (Opuntia sp.) species from Northeastern Mexico

机译：墨西哥东北部四种仙人掌类仙人掌的发芽前处理

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Prickly pear cactus (Opuntia sp.) is a major plant genus in arid and semiarid lands, due to its abundance, valuable contribution tohuman diet and use in animal feed. It also has a role in desertification control. Physiological assays on Opuntia seedlings andcomparison among species are limited due to the lack of germination and seedling development methodologies. The purpose ofthis research was to assess the seed germination and the speed of emergence in four species: O. engelmannii, O. microdasys, O.rastrera and O. megacantha, distributed around Coahuila’s Southeastern region in Mexico. We used a completely randomexperimental design with 23 pre-germination treatments and 4 replications. Seeds of 16 treatments were sown in Peat Moss andPerlite; while the seeds of seven treatments were placed at in vitro culture. We monitored the emergence of seedlings during 23days. We observed highly significant differences among species and treatments. O. engelmannii and O. microdasys seeds hadgermination percentages of 82.5% and 67.5%, respectively, by sanding then soaking in 3% hydrogen peroxide (H 2 O 2 ) for 24 hours;while O. rastrera reached a cumulative germination percentage of 72.5% with sanded seeds. O. megacantha had the highestgermination percentage (100%) after soaking the seeds in 3% H 2 O 2 for 24 hours. Scarifying treatments for six days of incubationresulted in faster seed emergence in the four assessed species. The results show that the most effective methodologies for seedgermination and seedling development in Opuntias are manual and chemical scarification, since scuffing the seed coat caninterrupt dormancy.
机译：仙人球仙人掌（Opuntia sp。）是干旱和半干旱地区的主要植物属，由于其丰富，对人类饮食的重要贡献以及在动物饲料中的用途。它还在防治荒漠化方面发挥作用。由于缺乏发芽和幼苗发育方法，因此对仙人掌幼苗的生理测定和种间比较是有限的。这项研究的目的是评估分布在墨西哥Coahuila东南地区的四种物种的种子萌发和出苗速度：欧氏梭菌（O. engelmannii），微孢子虫（O. microdasys），稻曲霉（O.rastrera）和巨型茄子（O. megacantha）。我们使用了完全随机的实验设计，进行了23种发芽前处理和4次重复。在泥炭藓和珍珠岩中播种了16种处理的种子。同时将七个处理的种子进行体外培养。我们在23天内监测了幼苗的出现。我们观察到物种和处理之间的显着差异。通过打磨然后浸泡在3％的过氧化氢（H 2 O 2）中24小时，恩格曼（O. engelmannii）和微蝇（O.microdasys）种子的发芽率分别为82.5％和67.5％;而牛油树的累计发芽率达72.5％。与磨砂的种子。将种子在3％H 2 O 2中浸泡24小时后，巨型芽孢杆菌的发芽率最高（100％）。经过六天的孵化处理，导致四个评估物种的种子更快出苗。结果表明，对仙人掌进行种子萌发和幼苗发育的最有效方法是人工和化学划痕，因为擦伤种皮会中断休眠。

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