%0 Journal Article
%T A COMPARATIVE STUDY ON THE WATER PHYSIOLOGICAL ECOLOGY OF DIFFERENT PROVENANCES OF MASSON PINE<br>不同种源马尾松水分生理生态的比较研究
%A Yu Xin-tuo
%A <br>俞新妥
%A 卢建煌
%A 王锦上
%J 植物生态学报
%D 1991
%I Editorial Office of Chinese Journal of Plant Ecology
%X A comparative study was made on the characteristics of water rela-tion (e.g. transpiration rate, transpiration efficiency, water potential etc.)of 9 Masson pine provenances from July 1988 to January 1989. The resu-lts indicate that the characteristics of water relations have definite cor-relationship with the growth and have a relatively higher genetic stabili-ty. It is shown that the mechanism of drought-resistance of Masson pinemay be attributed to its good drought-avoidance and drought-tolerancebesides its strong water-absorbing ability. Owing to the above differences,the different provenances of Masson pine have the dissimilar drought-res-istance. It was further observed that good provenances of Masson pine(e.g.the provenances in southern zone) were characterized by lower transpira-tion rate and water saturation deficit, higher transpiration efficiency andcritical w.s.d. and higher drought-resistance, which result a less influe-nce of water stress on the growth and a higher increment. Consequently,the 9 provenances may be classified into 3 types and 5 sub-types on thebases of the characters of water relations, using the method of clusteranalysis.
%K Masson pine
%K Provenance
%K Water relation<br>马尾松
%K 种源
%K 水分关系
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=2F2173CCFF292BF447DC2681EA33BBAE&aid=12499F20AAE0EEA3C8DD301C8215F3E4&yid=116CB34717B0B183&vid=23CCDDCD68FFCC2F&iid=E158A972A605785F&sid=26AEEED215BE97D0&eid=683005D16807E4FE&journal_id=1005-264X&journal_name=植物生态学报&referenced_num=0&reference_num=0