Effects of local source-sink manipulations on fruits and leaves of young pear trees

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• 作者：P.I. Garriz ; G.M. Colavita and H.L. Alvarez
• 关键词：growth ; leaf area removal ; fruiting spur ; Pyrus communis ; ringing
• 刊名：Biologia Plantarum
• 出版年：1998
• 出版时间：1998
• 年：1998
• 卷：41
• 期：4
• 页码：623-627
• 全文大小：265 KB

文摘

The effects of modifying local source-sink relations on fruit and leaf characteristics of young pear trees were evaluated during the 1997 - 1998 growing season. The following treatments were applied: early spur ringing (ESR) from 27 days after full bloom (DAFB), late spur ringing (LSR) from 97 DAFB, early 15 % spur leaf area removal (ELAR) and late 15 % spur leaf area removal (LLAR). ESR and LSR significantly inhibited fruit growth, suggesting that the fruiting spurs were not fully autonomous in their carbon economy. ELAR and LLAR had little effect on fruit size; sink strength was demonstrated here, since the presence of the fruit caused an efficient transfer of photoassimilates. ESR treatment decreased specific leaf mass (SLM) by 23.84 % when measured 94 DAFB. ELAR did not significantly influence SLM. Treatments had no marked influence on fruit quality.