14 HORTICULTURE [Bot. Absts., Vol. VI, 



larding on an annual rotation, half being cut for the summer crop, and half for winter. Iso- 

 lated trees produce more lac than those in dense stands, and thinning is necessary in con- 

 gested stands. Predacious insects should be killed by prompt treatment after harvest by 

 burning litter and by fumigation. — E. N. Munns. 



112. Weir, James R., and Ernest' E. Hubert. A study of the rots of western white 

 pine. U. S. Dept. Agric. Bull. 799. ftf p. 1919.— See Bot. Absts. 4, Entry 1379. 



HORTICULTURE 



J. H. Gourley, Editor 

 FRUITS AND GENERAL HORTICULTURE 



113. Anonymous. The dwarf cocoanut in Malaya. Tropical Life 16: 54-55. 1920. — 

 Review of an article by W. P. Handover in a recent issue of Agric. Bull. Federated Malay 

 States, describing the dwarf coconut known in Malaya as Nyor Gading or ivory coconut. 

 The dwarf variety is hardy, begins bearing in its fourth year, often at a height of only 10 feet, 

 and bears nuts of especially good quality. — H. N. Vinall. 



114. Conners, C. H. Some notes on the inheritance of unit characters in the peach. 

 Proc. Amer. Soc. Hortic. Sci. 16: 24-36. (1919) 1920. — This paper presents the data secured 

 from the first crop picked from the first generation seedlings from crosses among commercial 

 varieties of peaches. The parents used in one series of crosses were Elberta, Belle, Greens- 

 boro and Early Crawford. Although most of the seedlings bloomed at the normal period of 

 bloom for the varieties used, still several of them bloomed from 4 to 8 days later. This would 

 be desirable from the standpoint of irritability or tendency to start into growth during the 

 warm spells in the winter. Blossoms of the peach may be arranged into three groups as re- 

 gards size: large, medium, small. — Early Crawford, a small-blossom variety, when self- 

 pollinated gave seedlings, the blossoms of which were nearly all small. — When small-blossom 

 varieties were crossed with large-blossom varieties, the seedlings had medium sized blos- 

 soms. — The results seemed to indicate that the medium-size bloss-om was an intermediate, 

 for when crossed among themselves or selfed the seedlings split into approximately the 

 Mendelian rate for hybrids, large blossoms being dominant. Indications seem to point to 

 two pure types of bloom, the large and the small, with the medium-sized blossom as an inter- 

 mediate. — In addition to the correlation between the color of the inside of the calyx cup and 

 the flesh of the fruit as described by Hedrick, a correlation between the color of the leaves, 

 midrib and veins and the color of the fruit is given. — Ripening dates of the crosses did not 

 vary much from those of the parents, although there were certain exceptions. It would 

 seem that a cross between a pure white and a pure yellow would give all white flesh in the Fi. 

 — Wherever a white-fleshed variety is crossed upon a yellow-fleshed variety, the seedlings show 

 a marked increase in vigor over that of the yellow parents. This is especially true where 

 Greensboro is used. — Freestone X freestone gave about two-thirds freestone seedlings and 

 one-third semi-cling or cling. FreestoneX clingstone gave a large proportion of clingstone 

 seedlings, varying with the degree of clingineSs of the parents and with the power of the 

 freestone parent to product freestone seedlings. — From an economic aspect a number of the 

 seedlings are outstanding and have been propagated for further trial. Among these are: 

 (1) Several seedlings of Belle X Greensboro, freestones, oval in shape, of very bright color, 

 resistant to brown rot, vigorous and productive, ripening at the season of Carman. — (2) A 

 seedling of Belle X Early Crawford, ripening at the time of Champion, round in shape, free- 

 stone, a vigorous grower, having the flavor of Champion, but resistant to brown rot. — (3) 

 Several seedlings of Belle X Early Crawford that resemble Belle in shape but have the color 

 of Early Crawford, of good quality and ripening about the season of Belle. — (4) A seedling of 

 Early Crawford X Elberta, resembling Elberta in shape and color but of superior quality, 

 ripening about one week before Elberta. — The author lists the following general results: 

 Elberta carries white flesh as a recessive character to the extent of about one-third. It seems 



