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KMID : 0903620040450030154
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Journal of the Korean Society for Horticultural Science
2004 Volume.45 No. 3 p.154 ~ p.160
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Plant Growth Regulators for Improvement of Graft Union and Growth during Summer in Ruby Balls (Gymnocalycium mihanovichii var. friedrichii)
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Lee Jeong-Sik
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Abstract
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To improve the graft-take percentage and quality of the saddle grafted ruby balls with Hylocereus trigonus as rootstocks during summer, the plant growth regulators (PGRs) were treated 5 days after grafting. Globe diameter and root numbers were largest with 90 ㎎ㆍL?¹ indole-3-yl butyric acid (IBA) treatment regardless of the measured dates from grafting, while 75 ㎎ㆍL?¹ ancymidol showed longest root length. The chlorophyll contents was highest with 100 ㎎ㆍL?¹ diniconazole and lowest with 90 ㎎ㆍL?¹ IBA. The graft-take percentages with 25 ㎎ㆍL?¹ ancymidol and 25 ㎎ㆍL?¹ diniconazole were higher than other PGRs with different cocentrations except for 50 ㎎ㆍL?¹ diniconazole. The fresh and dry of the scion with 90 ㎎ㆍL?¹ IBA were increased with different PGRs. The fresh and dry mass of roots were increased by 30 ㎎ㆍL?¹ IBA. The betacyanin contents was highest with 50 ㎎ㆍL?¹ ancymidol and lowest with 60 and 90 ㎎ㆍL?¹ IBA. The marketability was highest with 90 ㎎ㆍL?¹ IBA and lowest with 50 ㎎ㆍL?¹ ancymidol. The Hunter’s L value was higher with 100 ㎎ㆍL?¹ N?-benzyladenine, the a value was higher with 100 ㎎ㆍL?¹ diniconazole.
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KEYWORD
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Hylocereus trigonus, graft-take, growth retardants
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