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首页> 外文期刊>Acta Horticulturae >Effects of treatment with gibberellic acid on germination of Protea cynaroides, P. eximia, P. neriifolia and P. repens (Proteaceae)
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Effects of treatment with gibberellic acid on germination of Protea cynaroides, P. eximia, P. neriifolia and P. repens (Proteaceae)

机译：赤霉素处理对Protea cynaroides，P。eximia，P。neriifolia和P. repens（Proteaceae）萌发的影响

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摘要

The seeds (achenes) of South African Protea spp. show dormancy which seems to be imposed by a low temperature requirement and by the action of the pericarp. In order to study the effects of GA3 on germination of P. cynaroides. P. eximia, P. neriifolia and P. repens, seeds were sown in a mixture of peat moss and lapilli (1:1 vol/vol) in plastic propagating trays which were placed in a well-ventilated greenhouse. Before sowing, seeds were imbibed for 24 h in either GA3 (100 p.p.m.) or distilled water(control). A randomized block design with 2 treatments and 3 replications was employed. Fifty seeds per treatment were used. Germination was recorded weekly for 21 weeks and percentages and rates of germination were calculated. Imbibition of GA3 significantly improved the percentage and rate of germination of P. eximia and P. neriifolia seeds. Although GA3 treatment improved percentage and rate of germination of P. cynaroides, this effect was not statistically significant. P. repens germination percentages were abnormally low and were not taken into account.
机译：南非普罗梯亚木种的种子（ache）。表现出休眠，这似乎是由于低温要求和果皮的作用所引起的。为了研究GA3对C. cynaroides萌发的影响。将Pim eximia，P。neriifolia和P. repens的种子播种在泥炭藓和lapilli（1：1 vol / vol）的塑料繁殖盘中，并将其放置在通风良好的温室中。播种前，将种子在GA3（100 p.p.m.）或蒸馏水（对照）中吸收24小时。采用具有2种治疗和3次重复的随机区组设计。每次处理使用五十粒种子。每周记录发芽21周，计算出发芽的百分比和速率。 GA3的吸收显着提高了Eximia和P. neriifolia种子的发芽率和发芽率。尽管GA3处理提高了P. cynaroides的发芽率和发芽率，但这种作用在统计学上并不显着。白僵菌的萌发百分比异常低，因此未考虑在内。

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