Rooting capabilities for Taxodium ‘Zhongshanshan’ 302, 118, and 405
-
摘要: 为了解分别选育于1979,1993,2004年的3期中山杉Taxodium Zhongshanshan 无性系的扦插生根能力差异,研究了清水对照(ck),1 000 mgL-1吲哚乙酸、1 000 mgL-1萘乙酸、2 000 mgL-1吲哚乙酸、2 000 mgL-1萘乙酸、1 000 mgL-1吲哚乙酸和1 000 mgL-1萘乙酸1:1混合液、2 000 mgL-1吲哚乙酸和2 000 mgL-1萘乙酸1:1混合液分别处理下中山杉302,118,405 Taxodium Zhongshanshan 302, 118, 405的生根率、生根数量、最大根根长和最大根基茎。结果表明:①清水对照或2 000 mgL-1吲哚乙酸处理下,中山杉302的生根率显著低于(P<0.05)中山杉118,405,其余5个处理下,3个无性系的生根率在0.01水平差异显著。1 000 mgL-1萘乙酸、2 000 mgL-1萘乙酸、2 000 mgL-1吲哚乙酸和2 000 mgL-1萘乙酸1:1混合液处理下,中山杉302生根数超过4条的百分率显著低于(P<0.01)中山杉118,405。1 000 mgL-1吲哚乙酸、1 000 mgL-1吲哚乙酸和1 000 mgL-1萘乙酸1:1混合液处理下,3个无性系生根数超过4条的百分率在0.05水平差异显著。②1 000 mgL-1萘乙酸、2 000 mgL-1吲哚乙酸、2 000 mgL-1萘乙酸、2 000 mgL-1吲哚乙酸和2 000 mgL-1萘乙酸1:1混合液处理下,3个无性系的生根率显著高于(P<0.05)对照;2 000 mgL-1萘乙酸处理下,3个无性系生根数超过4条的百分率显著高于(P<0.05)对照。这些结果显示:①3个中山杉无性系的扦插生根能力存在显著的差异。②植物生长调节物质处理可以提高3个无性系的生根率和生根数量。7个处理中,2 000 mgL-1吲哚乙酸和2 000 mgL-1萘乙酸1:1的混合液处理效果最佳。图4表1参21Abstract: To explore the asexual rooting capabilities among clones selected at 1979, 1993, 2004, respectively, the rooting rate, rooting number, length and basal diameter of the maximum root were compared among three clones of Taxodium Zhongshanshan302, 118, 405 with different treatments of water control, 1 000 mgL-1 indole acetic acid, 1 000 mgL-1 naphthyl acetic acid, 2 000 mgL-1 indole acetic acid, 2 000 mgL-1 naphthyl acetic acid, 1:1 mixture of 1 000 mgL-1 indole acetic acid and 1 000 mgL-1 naphthyl acetic acid, 1:1 mixture of 2 000 mgL-1 indole acetic acid and 2 000 mgL-1 naphthyl acetic acid. Results showed that: 1) The rooting rate of T. Zhongshanshan 302 was significantly lower (P<0.05) than those of T. Zhongshanshan 118 and T. Zhongshanshan 405 in control condition or treatment with 2 000 mgL-1 indole acetic acid, while significantly lower(P<0.01) in the rest of treatments. The percentage of cuttings with rooting number more than four of T. Zhongshanshan 302 was significantly lower (P<0.01) than those of T. Zhongshanshan 118 and T. Zhongshanshan 405 in 1 000 mgL-1 naphthyl acetic acid, 2 000 mgL-1 naphthyl acetic acid, 1:1 mixture of 2 000 mgL-1 indole acetic acid and 2 000 mgL-1 naphthyl acetic acid, while significantly lower(P<0.05) in 1 000 mgL-1 indole acetic acid, 1:1 mixture of 1 000 mgL-1 indole acetic acid and 1 000 mgL-1 naphthyl acetic acid. 2)Compared to the control, the rooting rate for all three clones were significantly greater(P<0.05) for each hormone treatment, excepting 1 000 mgL-1 indole acetic acid, 1:1 mixture of 1 000 mgL-1 indole acetic acid and 1 000 mgL-1 naphthyl acetic acid; the percentage of cuttings with rooting number more than four for all three clones were significantly greater(P<0.05) for 2 000 mgL-1 naphthyl acetic acid. Overall, there were significant differences in rooting capabilities among the three clones. And the rooting rate and rooting number for all three clones could be improved by hormone treatments. Among the 7 treatments, the treatment with 1:1 mixture of 2 000 mgL-1 indole acetic acid and 2 000 mgL-1 naphthyl acetic acid gained the highest rooting rate and the largest rooting number. [Ch, 4 fig. 1 tab. 21 ref.]
-
链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.04.023
计量
- 文章访问数: 2419
- HTML全文浏览量: 404
- PDF下载量: 509
- 被引次数: 0