Effect of Plant Growth Regulator on Root Activity of Tomato in Long-termSoilless Cultivation

ACTA HORTICULTURAE SINICA ›› 2007, Vol. 34 ›› Issue (3): 771-774.

• 研究简报 • Previous Articles Next Articles

Effect of Plant Growth Regulator on Root Activity of Tomato in Long-termSoilless Cultivation

JIANGWei-jie^*;YU Hong-jun;ZHU De-wei; DU Yong-chen; LI Hong; SHI Zhen-xia

( Institute of Vegetables and Flowers, Chinese Academ y of Agricultural Sciences, B eijing 100081, China)

Received:1900-01-01 Revised:1900-01-01 Online:2007-06-25 Published:2007-06-25

Abstract

Abstract: An experiment was conducted to study the effects of plant growth regulators ( PGR ) on
growth of tomato Baofa 008 and their mechanism in long-term soilless cultivation in greenhouse. The plant
growth regulators included 2, 4-D, uniconazole (UNI) , salicylic acid ( SA ) , Yunda-120, NAA and com
pound sodium nitrophenolate (CSN). The results indicated that tomato plant treated with Yunda-120, CSN +
NAA increased root activities by 0.623 mg·h^-1 ·g^-1 and 0.558 mg·h^-1 ·g^-1 , respectively, which were
significantly higher than that of the control, enhanced leaf net photosynthesis rate and p lant stem growth, con
sequently increased tomato yield by 13.42% and 8.78% , respectively, as compared with the control.

Key words: Tomato, Plant growth regulator, Root activity, Soilless cultivation

JIANGWei-jie;YU Hong-jun;ZHU De-wei;DU Yong-chen;LI Hong;SHI Zhen-xia. Effect of Plant Growth Regulator on Root Activity of Tomato in Long-termSoilless Cultivation[J]. ACTA HORTICULTURAE SINICA, 2007, 34(3): 771-774.

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Effect of Plant Growth Regulator on Root Activity of Tomato in Long-termSoilless Cultivation

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