A cytological study of the sweet potato plant <i>Ipomoea batatas</i> (L.) Lam. and its related species. Ting, Y. C.; Kehr, A. E.; and Miller, J. C. The American Naturalist, 91(858):197–203, May, 1957.
A cytological study of the sweet potato plant <i>Ipomoea batatas</i> (L.) Lam. and its related species [link]Paper  abstract   bibtex   
Millions of people are dependent upon the cultivation of the sweet potato for subsistence, and it ranks as one of the most important world food crops. Despite this, research along cytological lines on this crop and its related species has been much neglected. Chromosome numbers of many species of the genus Ipomoea have not yet been determined, and few varieties of commercial sweet potatoes have been cytologically analyzed. The superior pioneer works of Kano (1929), Walcott (1937), King and Bamford (1937), and Rao (1947) have provided much valuable information concerning chromosome numbers to research staffs working on sweet potato improvement, but more is needed. It is astonishing that the first meiotic study of the sweet potato itself was not published until 1953 (Ting and Kehr, 1953). The present study was undertaken with the objective of examining the meiotic features in various varieties of the sweet potato plant, and deter- mining the chromosome numbers of the other species in the genus Ipomoea. Particular attention was paid to those species which are taxonomically closely placed to the sweet potato plant. In addition, an interspecific hy- bridization program was initiated in order to clarify the phylogenetic relationship between the sweet potato plant and the other species in the genus.
@article{ting_cytological_1957,
	title = {A cytological study of the sweet potato plant \textit{{Ipomoea} batatas} ({L}.) {Lam}. and its related species},
	volume = {91},
	copyright = {Copyright © 1957 The University of Chicago},
	issn = {0003-0147},
	url = {http://www.jstor.org/stable/2458418},
	abstract = {Millions of people are dependent upon the cultivation of the sweet potato for subsistence, and it ranks as one of the most important world food crops. Despite this, research along cytological lines on this crop and its related species has been much neglected. Chromosome numbers of many species of the genus \textit{Ipomoea} have not yet been determined, and few varieties of commercial sweet potatoes have been cytologically analyzed. The superior pioneer works of Kano (1929), Walcott (1937), King and Bamford (1937), and Rao (1947) have provided much valuable information concerning chromosome numbers to research staffs working on sweet potato improvement, but more is needed. It is astonishing that the first meiotic study of the sweet potato itself was not published until 1953 (Ting and Kehr, 1953). The present study was undertaken with the objective of examining the meiotic features in various varieties of the sweet potato plant, and deter- mining the chromosome numbers of the other species in the genus Ipomoea. Particular attention was paid to those species which are taxonomically closely placed to the sweet potato plant. In addition, an interspecific hy- bridization program was initiated in order to clarify the phylogenetic relationship between the sweet potato plant and the other species in the genus.},
	language = {English},
	number = {858},
	urldate = {2015-03-30},
	journal = {The American Naturalist},
	author = {Ting, Y. C. and Kehr, A. E. and Miller, J. C.},
	month = may,
	year = {1957},
	keywords = {Ipomoea alba L., Ipomoea arborescens (Humb. \& Bonpl. ex Willd.) G.Don, Ipomoea asarifolia (Desr.) Roem. \& Schult., Ipomoea batatas (L.) Lam., Ipomoea capillacea (Kunth) G.Don, Ipomoea carnea Jacq., Ipomoea hederacea (L.) Jacq., Ipomoea hochstetteri House, Ipomoea indica (Burm.) Merr., Ipomoea littoralis Blume, Ipomoea pandurata (L.) G.Mey., Ipomoea pes-caprae (L.) R.Br., Ipomoea pubescens Lam., Ipomoea purpurea (L.) Roth, Ipomoea setosa Ker Gawl., Ipomoea tiliacea (Willd.) Choisy, Ipomoea tricolor Cav., Ipomoea triloba L., Ipomoea utilis Choisy, Ipomoea violacea L.},
	pages = {197--203},
}
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