況紅玲 杜丹 張欣 喻峰 王昆 楊玉潔 胡津鑫



摘 要: 冬青科植物種子在自然條件下,需要隔年甚至3年才能實現萌發,本文以無刺構骨種子為研究對象,通過對無刺構骨種子種皮的透性(透氣性和透水性)、不同時間的酸蝕處理、不同濃度的GA3溶液以及層積處理等多方面的試驗,尋找阻礙種子萌發的因素,了解無刺構骨種子的休眠原因,初步了解無刺構骨種子的萌發生理。試驗結果表明:無刺構骨種子經先暖溫后低溫及層積處理更有利于種子的生理后熟和萌發。
關鍵詞: 無刺構骨;種子萌發;酸蝕處理;層積處理;GA3處理
中圖分類號:S792 文獻標識碼:A 文章編號:1004-3020(2018)01-0014-05
Study on Dormancy and Germination of Seeds with Ilex cornuta var.fortunei
Kuang Hongling(1) Du Dan(1) Zhang Xin(1) Yu Feng(1) Wang Kun(1) Yang Yujie(2) Hu Jinxin(2)
(1. Faye Ecological Environment Group Co., LTD Wuhan 430206;2. Yangtze University Jingzhou 434100)
Abstract: The seed of Pinus elliottii seeds under the natural conditions is necessary for the next year or even three years to achieve germination. In this paper, the seeds of the seeds without acupuncture are used to study the permeability (permeability and permeability) Time agglutination treatment, different concentrations of GA3 solution and chromatography treatment and other aspects of the experiment to find the factors that impede the seed germination, to understand the seeds of the seeds without acupuncture, and to understand the germination and physiology of seeds without acupuncture. The results showed that the low temperature and stratification treatment of the seeds without the first warm temperature was more favorable to the physiological maturation and germination of the seeds.
Key words: Ilex cornuta var. fortunei;seed germination;acid etching treatment;lamination treatment; GA3 treatment
無刺枸骨(Ilex cornuta var.fortunei)是冬青科(Aquifoliaceae)冬青屬枸骨(I. cornuta)的自然變種,常綠灌木或小喬木,樹種枝繁葉茂,葉形奇特,樹葉濃綠有光澤。樹冠圓整,4~5月開黃綠色小花,花序為聚傘花序或傘形花序,雌雄異株,核果球形,初為綠色,入秋成熟轉紅,滿枝累累碩果,鮮艷奪目,經冬不凋直至來年春季,經修枝整形可制作成大樹形,球形及樹狀盆景,是良好的觀花、觀果、觀葉、觀形的樹種,多應用于庭園觀賞和城市綠化。
由于無刺枸骨種子的休眠周期一般長達3年,極大影響了生產上的繁殖效率。如何快速打破種子休眠,提高種子的發芽率,是目前無刺枸骨播種繁殖研究的難點。本文通過對無刺構骨種子的深入了解,探究影響種子休眠的因素,尋找快速打破種子休眠的合理方法,同時為冬青屬其它樹種種子如何打破休眠奠定基礎。……