Grafting propagation technology of Michelia×alba

doi:10.14088/j.cnki.issn0439-8114.2024.01.019

Abstract

Abstract: In order to explore the affinity difference of different rootstock and scion combinations of Michelia × alba grafted seedlings and the related factors affecting the growth of Michelia × alba grafted seedlings, six different rootstocks of Michelia macclurei Dandy, Michelia champaca Linn., Michelia chapensis Dandy, Michelia maudiae Dunn, Magnolia delavayi Franch. and Michelia × alba were grafted by cutting; the differences of grafting time, rootstock diameter class and substrate type were also studied. The results showed that December was the most suitable time for Michelia × alba grafting; the rootstock type had an effect on the growth and flowering of grafted seedlings. The survival rate of grafted seedlings of Michelia × alba and Michelia macclurei Dandy was higher than that of the other four rootstocks, up to 94.0%, but the grafted seedlings with Michelia macclurei Dandy as rootstock grew fastest; different rootstock types of Michelia × alba grafted seedlings had different budding periods. The Michelia × alba grafted seedlings with Magnolia delavayi Franch. as rootstock had the earliest budding period, and the budding rate was 68.2% after four months of grafting, and the budding rate of the self-rooted seedlings was the lowest, only 12.7%. The rootstock diameter class had an effect on the survival rate of grafted seedlings. When the rootstock ground diameter was greater than 0.8 cm, the survival rate of grafted seedlings was the highest, reaching 94.1%. When the rootstock ground diameter was less than or equal to 0.5 cm, the survival rate of grafted seedlings was significantly reduced. The survival rate and growth of grafted seedlings were affected by the seedling culture medium. The survival rate and growth of seedlings in the medium of 70.0% yellow core soil∶25.0% peat soil∶4.5% rice bran and 95.0% yellow core soil∶4.5% rice bran combined with 0.5% long-term controlled-release fertilizer were better than other combinations. There were many factors affecting the quality of grafted seedlings. The results of the study showed that the rootstock type affected the survival rate and flowering characteristics of grafted seedlings; grafting time, rootstock diameter class and substrate type all had effects on seedling survival rate and growth.

Key words: Michelia ×alba, stock, grafting, survival rate, length of scion stick, budding, stroma substrate

CLC Number:

S685.15
S616

YANG Li-ping, LI Fang-fei, YANG Qiong, WEI Dong-ling, CHEN Li-wen, SHI Qun, WANG Peng-liang, CHEN Nai-ming. Grafting propagation technology of Michelia×alba[J]. HUBEI AGRICULTURAL SCIENCES, 2024, 63(1): 106-111.

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