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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Article de revue

Induction of sprouting in dormant yam (Dioscorea spp.) tubers with inhibitors of gibberellins  [2003]

Shiwachi, H.; Ayankanmi, T.; Asiedu, R.; Onjo, M.;

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A reliable means to induce sprouting in dormant seed tubers of yams (Dioscorea species) is required to enhance flexibility in planting date and rate of propagation of the crop. Experiments were conducted to assess the potential of two gibberellin inhibitors, Uniconazole-P and Prohexadione-calcium, to induce sprouting in tubers from three varieties of D. rotundata and four of D. alata. Uniconazole-P and Prohexadione-calcium shortened the period of dormancy in tubers of some varieties. In others, they either had no effect or extended dormancy. The varietal responses were also influenced by whether the tubers were treated at harvest (before shoot senescence) or four weeks after harvest by which time shoots had senesced fully. Tubers stored in darkness at a constant temperature of 30 °C sprouted earlier but lost weight faster than did those stored under natural daylight and ambient temperature. The apparent slow action of Uniconazole-P and Prohexadione-calcium, and their variable effectiveness in relation to variety, would limit their usefulness in seed or breeding programmes, or in determining treatment timing and the best storage environment for the tubers after treatment.
(Revue
Experimental agriculture
ISSN : 0014-4797

Information bibliographique

Langue:
English
Type:
Journal Article
Sur AGRIS depuis:
2015
Volume:
39
Numéro:
2
Page initiale:
209
Page finale:
217
Editeur:
Cambridge University Press
Tous les titres:
"Induction of sprouting in dormant yam (Dioscorea spp.) tubers with inhibitors of gibberellins"@eng
Autre:
"Includes references"
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Information bibliographique

Langue:
English
Type:
Journal Article
Sur AGRIS depuis:
2015
Volume:
39
Numéro:
2
Page initiale:
209
Page finale:
217
Editeur:
Cambridge University Press
Tous les titres:
"Induction of sprouting in dormant yam (Dioscorea spp.) tubers with inhibitors of gibberellins"@eng
Autre:
"Includes references"