Effect of Crop Load on Photosynthetic Rate and Dry Matter Production of Apple

doi:10.3321/j.issn:1000-7091.2003.z1.036

Abstract

Abstract: The fruit numbers w ere limited according to t runk cross-sectional area. Leaf photosynthet ic rateand dry mat ter accumulation of shoot,leaf and fruit w ere monitored for 2 years in succession. The result sshowed that the photosynthet ic rate was posit ively correlated with dry w eight (r = 01972 7). With changes ofcrop load,there w ere sig nificant differences in the variation level of photosynthet ic rate and dry w eight. A-lthoug h crop load was positively correlated with dry w eight (r= 01974 1),the content of photosynthet ic product stransported to f ruits changed signif icantly. Crop load had a sig nificant ef fect on fruit quality and f low er bud differentiation rate in the next year.

Key words: Apple, Crop load, Photosynthetic rate, Dry mat ter

CLC Number:

S661.101

RAN Xin-tuo, ZHANG Xin-sheng. Effect of Crop Load on Photosynthetic Rate and Dry Matter Production of Apple[J]. ACTA AGRICULTURAE BOREALI-SINICA, doi: 10.3321/j.issn:1000-7091.2003.z1.036.

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