EFFECT OF AIR HUMIDITY AROUND TUBEROUS ROOT ON SINK STRENGTH IN SWEET POTATO PLANTS GROWN IN A SOLUTION-AIR CULTURE SYSTEM

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概要

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• Sweet potato plants (Ipomoea batatas Lam.) were grown in a solution-air culture system, where the tuberous root was kept in an air space above a nutrient solution. Effect of air humidity in the air space on sink strength of tuberous root was examined under the respective humidity conditions of 50, 70 and 90±8%RH at a root temperature of 24±0.5℃. Fresh weight of tuberous root became higher at higher humidities. Dry weight was lowest at 50%RH and almost the same at 70% and 90%RH. At 90%RH, however, the larger part of dry matter was partitioned to adventitious buds than to tuberous root. Sink strength of tuberous root, which was estimated by dry weight per unit leaf area, was found to be maximized at 70%RH.

著者

• Eguchi T

  Kyushu Univ. Fukuoka Jpn

• Eguchi H

  Res.center For Nuclear Sci. And Tech. Univ Of Tokyo

• Eguchi Hiromi

  Biotron Institute Kyushu University

• KITANO M.

  Biotron Institute, Kyushu University

• EGUCHI H.

  Biotron Institute, Kyushu University

• EGUCHI T.

  Biotron Institute, Kyushu University

• KITANO Masaharu

  Biotron Institute, Kyushu University

• Kitano Masaharu

  Biotron Institute Kyushu University

• Kitano M

  Faculty Of Agriculture Kochi University

• Eguchi T.

  Biotron Institute Kyushu University

• Eguchi H.

  Biotron Institute Kyushu University

• Kitano M.

  Biotron Institute Kyushu University

• Eguchi Toshihiko

  Biotron Application Center Kyushu University

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