Studies on the Rela tionship between the POD and IOD Activity and the Growth Vigor of Walnut

ACTA HORTICULTURAE SINICA ›› 2006, Vol. 33 ›› Issue (2): 229-232.

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Studies on the Rela tionship between the POD and IOD Activity and the Growth Vigor of Walnut

Zhang Zhihua;Liu Xincai; Wang Hongxia; Gao Yi; and Zhao Yuep ing

(Mountainous Areas Research Institute, Hebei Agricultural University, Baoding 071001, China)

Received:2005-04-08 Revised:2005-07-07 Online:2006-04-25 Published:2006-04-25

Abstract

Abstract: The relationship between the POD and IOD activity ofwalnut and the growth vigorwas studied by measuring the POD and IOD activity of leaves and roots ofwalnut seedlings, and through observing and analyzing the growth vigor. The results indicated that the POD activity of leaves have negative relationship strikingly with the tree height, and have bally negative correlation significantly with increment of tree height. The POD activity of roots have bally negative relationship strikinglywith the tree height and trunk girth, and have
negative relationship significantlywith increment of tree height and trunk girth. The IOD activity of roots have bally negative correlation strikingly with the tree height, and have negative relationship strikingly with trunk girth and increment of tree height. The POD and IOD activity of leaves higher than that of roots. The POD and IOD activity of roots and the POD activity of leaves can be used for forecasting the growth vigor of walnut seedling.

Key words: Walnut, POD, IOD, Growth vigor

Zhang Zhihua;Liu Xincai;Wang Hongxia;Gao Yi;and Zhao Yuep ing. Studies on the Rela tionship between the POD and IOD Activity and the Growth Vigor of Walnut[J]. ACTA HORTICULTURAE SINICA, 2006, 33(2): 229-232.

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Studies on the Rela tionship between the POD and IOD Activity and the Growth Vigor of Walnut

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