摘要:

The A. describes a biocoenological method, proposed by E. Schmid, applying it to the study ofQuercuscommunities of the Langhe (southern Piedmont.)

ISSN:0017-0070    

DOI:10.1080/11263505109431512

出版商:Taylor & Francis Group    

年代:1951

数据来源: Taylor

摘要:

On the basis of Schanderl's findings (1939), according to wich leguminous plants usually harbourRhizobiumnot only in the roots, but also in the stems and leaves, the Authors asked themselves why these organs behave in such different ways and notably for what reason the roots proliferate forming root nodules while the stems, which undergo the same stimulus, show no morfological reaction.

ISSN:0017-0070    

DOI:10.1080/11263505109431513

出版商:Taylor & Francis Group    

年代:1951

数据来源: Taylor

摘要:

Previous investigations have shown that AA is the factor regulating the morphological effects of symbiosis between leguminous plants andRhizobium.All parts of the Leguminosae normally harbour bacteria, but only the roots, which are exceedlingly poor in AA, present characteristic growth reactions through formation of nodules, whereas the epigeal organs, although invaded by bacteria but sufficiently rich in AA, do not present any morphological reaction.

ISSN:0017-0070    

DOI:10.1080/11263505109431514

出版商:Taylor & Francis Group    

年代:1951

数据来源: Taylor

摘要:

The evolution of wood ring in Castanea sativa mill. — The Author has studied the wood ring evolution during one year on two specimens ofCastanea sativaMill. growing respectively the former in a chestnut wood at Masso del Diavolo (ca 1000 m. over sea level), near Vallombrosa, a locality lying outside the normal area of distribution of the species, and the latter at Colle di S. Giusto (ca 500 m. over sea level), near Greve, a locality included in the «horizon» proper of the species. In the former contemporary wood growth of the main stem, branch and sterile shoot has been studied; in the latter wood growth of the stem and the branch only.

ISSN:0017-0070    

DOI:10.1080/11263505109431515

出版商:Taylor & Francis Group    

年代:1951

数据来源: Taylor

摘要:

The evolution of the wood ring in Quercus Suber L. (from October 1946 to September 1947). — The Author has studied the wood ring evolution in Quercus Suber L. during one year, by means of sampling monthly the main stem and young branches of a specimen growing as S. Giust near Florence (m. ca. 500 ov. s. l.).

ISSN:0017-0070    

DOI:10.1080/11263505109431516

出版商:Taylor & Francis Group    

年代:1951

数据来源: Taylor

摘要:

On the ground of previsious experiments (Meletti 1950), the Author has studied histological reactions in seedlings ofPisum sativumL., treated with solutions of 2,4-D, 10 mgr/1.

ISSN:0017-0070    

DOI:10.1080/11263505109431517

出版商:Taylor & Francis Group    

年代:1951

数据来源: Taylor

摘要:

Leaves and stems of plants ofVicia FabaL., grown in the light or in the dark, in different conditions of humidity and temperature, have been treated with various concentrations of 2,4-D in lanolin.

ISSN:0017-0070    

DOI:10.1080/11263505109431518

出版商:Taylor & Francis Group    

年代:1951

数据来源: Taylor

摘要:

A specimen of Olive Tree has been divided in five sectors consisting of an equal number of branches.

ISSN:0017-0070    

DOI:10.1080/11263505109431519

出版商:Taylor & Francis Group    

年代:1951

数据来源: Taylor

摘要:

It is described a new species of the genusZygosporium (Z. chartarum)which compared with the other species already known of the genus, has been distinguished from them for its morphological characters and for the source from, which it has been isolated.

ISSN:0017-0070    

DOI:10.1080/11263505109431520

出版商:Taylor & Francis Group    

年代:1951

数据来源: Taylor

ISSN:0017-0070    

DOI:10.1080/11263505109431521

出版商:Taylor & Francis Group    

年代:1951

数据来源: Taylor