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Growth Differences among Different F1 Generation of Pine Hybrids in Northern Zhejiang and Southern Anhui and Their Early Assessment and Selection

  • Growth differences of four seven-year-old pine hybrids (PTA×PCH, PTA×PCB, PEE×PCH, and PEE×PCB) in Northern Zhejiang and six nine-year-old pine hybrids (PTA×PCH, PTA×PCC, PTA×PCB, PEE×PCH, PEE×PCC, and PEE×PCB) in Southern Anhui were studied. The results revealed that there were significant differences in height, DBH and timber volume among these hibrids in different sites. Early selection indicated that PTA×PCH was the better hybrid type in mid-subtropical area of northern China (Test site: Hangzhou City, Zhejiang; 30°27'N,119°48'E), and PTCH20, PTCH12, PTCH41, PTCH17, PTCH61 and PTCH16 had good performance in stock volume among the PTA×PCH hybrids on this sites. While PEE×PCC(Such as PECC1-37, PECC18-55, PECC18-32, PECC10-6) had better performance in stock volume in northern subtropical area of China (Test site: Taihu County, Anhui; 30°30'N, 116°12'E). And some PEE×PCH, PTA×PCH hybrids (such as PECH12-9, PECH42, PTCH13-24) had good performance in northern subtropical, too. The stock volume of better hybrid progenies above exceeded the control (CK) by 40%. All the conclusion was consistent with the international research results about the adaption and heterosis of pine hybrids and could provide references in the selection of hybrid type in southern China.
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Growth Differences among Different F1 Generation of Pine Hybrids in Northern Zhejiang and Southern Anhui and Their Early Assessment and Selection

  • 1. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, Zhejiang, China

Abstract: Growth differences of four seven-year-old pine hybrids (PTA×PCH, PTA×PCB, PEE×PCH, and PEE×PCB) in Northern Zhejiang and six nine-year-old pine hybrids (PTA×PCH, PTA×PCC, PTA×PCB, PEE×PCH, PEE×PCC, and PEE×PCB) in Southern Anhui were studied. The results revealed that there were significant differences in height, DBH and timber volume among these hibrids in different sites. Early selection indicated that PTA×PCH was the better hybrid type in mid-subtropical area of northern China (Test site: Hangzhou City, Zhejiang; 30°27'N,119°48'E), and PTCH20, PTCH12, PTCH41, PTCH17, PTCH61 and PTCH16 had good performance in stock volume among the PTA×PCH hybrids on this sites. While PEE×PCC(Such as PECC1-37, PECC18-55, PECC18-32, PECC10-6) had better performance in stock volume in northern subtropical area of China (Test site: Taihu County, Anhui; 30°30'N, 116°12'E). And some PEE×PCH, PTA×PCH hybrids (such as PECH12-9, PECH42, PTCH13-24) had good performance in northern subtropical, too. The stock volume of better hybrid progenies above exceeded the control (CK) by 40%. All the conclusion was consistent with the international research results about the adaption and heterosis of pine hybrids and could provide references in the selection of hybrid type in southern China.

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