Effects of gibberellin A4/7, 6-benzylaminopurine and chlormequat chloride on the number of male and female strobili and immature cones in Chinese pine (Pinus tabuliformis) with foliar sprays |
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| Authors: | Peng Zhao Jun-feng Fan Shuo-xin Zhang Zhong-lian Huang Pei-hua Yang Zhen-hua Ma Keith E. Woeste |
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| Affiliation: | ZHAO Peng 1,2 Keith E. Woeste 2 ZHANG Shuo-xin 1,3 YANG Peihua 1 FAN Jun-feng 1 1 College of Forestry,Northwest A&F University,Yangling,Shaanxi 712100,P. R. China,2 USDA Forest Service,Hardwood Tree Improvement and Regeneration Center,Department of Forestry and Natural Resources,Purdue University,715 West State Street,West Lafayette,IN 47907,USA. 3 Qinling National Forest Ecosystem Research Station,Ningshan,Shaanxi 711600,P. R. China. HUANG Zhong-lian Donald Danforth Plant Science Center,St.... |
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| Abstract: | Three kinds of plant growth regulators, gibberellinA 4/7 (GA 4/7 ), 6-benzylaminopurine (BA), and chlormequat chloride (CCC), were evaluated for their ability to promote strobilus and cone production in a Chinese pine (Pinus tabuliformis Carr.) clonal seed orchard. Treatments (0, 250, 500, or 1000 mg L -1 ) were applied during three periods (June- July, July-August and August-September) in 2005. Of the three plant growth regulators, GA 4/7 was the best for promoting flower and cone production. Trees sprayed... |
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| Keywords: | flower promotion conifer seed production breeding Pinus tabuliformis Carr. |
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