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Journal Article 2002

Effect of day length on the development of tubers in yams (Dioscorea spp.)

Autor: Shiwachi, H. Ayankanmi, T.G. Asiedu, Robert

Sixty-day-old plants of white Guinea yam (Dioscorea rotundata), water yam (D. alata) and yellow Guinea yam (D. cayenensis) were exposed to 10 h day lengths (short days) for 15 and 30 days. Short-day treatment applied at the early growth stage of yams promoted the enlargment of tubers, but the res...

Enlace original: https://cgspace.cgiar.org/handle/10568/103630

Investigación en Agricultura

DIOSCOREA ROTUNDATA

DIOSCOREA ALATA

DIOSCOREA CAYENENSIS

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Shiwachi, H. , Ayankanmi, T.G. , Asiedu, Robert , [Effect of day length on the development of tubers in yams (Dioscorea spp.)] , Effect of day length on the development of tubers in yams (Dioscorea spp.)

Journal Article 2010

Optimum time for collection of root samples for chromosome observation in yams (Dioscorea spp.)

Autor: Babil, P.K. Kikuno, H. Shiwachi, H. Toyohara, H. Fujigaki, J. Fujimaki, H. Asiedu, Robert

The genus Dioscorea is considered to be one of the most difficult groups for cyto-taxonomic studies because of the large number and small size of the chromosomes. The objective of the present study was to develop an efficient method of chromosome observation by identifying the optimum time for co...

Enlace original: https://cgspace.cgiar.org/handle/10568/90365

Investigación en Agricultura

CELL DIVISION

CYTOLOGY

DIOSCOREA

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Babil, P.K. , Kikuno, H. , Shiwachi, H. , Toyohara, H. , Fujigaki, J. , Fujimaki, H. , Asiedu, Robert , [Optimum time for collection of root samples for chromosome observation in yams (Dioscorea spp.)] , Optimum time for collection of root samples for chromosome observation in yams (Dioscorea spp.)

Journal Article 2005

Sprouting and yield of yam (Diocorea spp.) minisetts in relation to sett size, soil moisture and agroecology

Autor: Ayankanmi, T.G. Shiwachi, H. Asiedu, Robert

Seed tuber production of Dioscorea rotundata using the minisett technique was tested on-farm and on-station in different agro-ecological zones in Nigeria. A lower sprouting rate of minisetts was observed in the southern Guinea savanna than in the tropical forest zone. Sprouting and tuber yield in...

Enlace original: https://cgspace.cgiar.org/handle/10568/91890

Investigación en Agricultura

DIOSCOREA ROTUNDATA

SPROUTING

TUBER

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Ayankanmi, T.G. , Shiwachi, H. , Asiedu, Robert , [Sprouting and yield of yam (Diocorea spp.) minisetts in relation to sett size, soil moisture and agroecology] , Sprouting and yield of yam (Diocorea spp.) minisetts in relation to sett size, soil moisture and agroecology

Journal Article 2005

Mini tuber production using yam (Dioscorea rotundata) vines

Autor: Shiwachi, H. Kikuno, H. Asiedu, Robert

Mini tubers were produced from two varieties of Dioscorea rotundata using vine cuttings planted in carbonized rice husk or coco-peat in a screen house. The cuttings established better and produced more mini tubers in carbonized rice husk than in coco-peat 100 days after planting. Vine cuttings of...

Enlace original: https://cgspace.cgiar.org/handle/10568/91889

Investigación en Agricultura

CARBONIZED RICE HUSK

DIOSCOREA ROTUNDATA

MINI TUBER

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Shiwachi, H. , Kikuno, H. , Asiedu, Robert , [Mini tuber production using yam (Dioscorea rotundata) vines] , Mini tuber production using yam (Dioscorea rotundata) vines

Journal Article 2005

Effect of photoperiod on the development of inflorescences in white Guinea yam (Dioscorea rotundata)

Autor: Shiwachi, H. Ayankanmi, T.G. Asiedu, Robert

In experiments in 2001 to 2003, 50-day-old plants of four varieties of white Guinea yam (D. rotundata) were exposed to 10 h (short-day) day length for 15 days, 14 h for 30 days or constant 24 h, with natural day length as the control. Under natural day length the male varieties flowered earlier t...

Enlace original: https://cgspace.cgiar.org/handle/10568/91888

Investigación en Agricultura

DIOSCOREA ROTUNDATA

PHOTOPERIOD

INFLORESCENCE

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Shiwachi, H. , Ayankanmi, T.G. , Asiedu, Robert , [Effect of photoperiod on the development of inflorescences in white Guinea yam (Dioscorea rotundata)] , Effect of photoperiod on the development of inflorescences in white Guinea yam (Dioscorea rotundata)

Conference Paper 2010

Optimum time for collecting root samples for chromosome observation in Dioscorea spp.

Autor: Babil, P.K. Kikuno, H. Shiwachi, H. Toyohara, H. Fujigaki, J. Fujimaki, H. Asiedu, Robert

The genus Dioscorea is considered to be one of the most difficult groups for cyto-taxonomic studies because of the large number and small size of the chromosomes. The objective of the present study was to develop an efficient method of chromosome. Observation by identifying the optimum time for c...

Enlace original: https://cgspace.cgiar.org/handle/10568/90870

Investigación en Agricultura

DIOSCOREA

CHROMOSOMES

METAPHASE CELLS

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Babil, P.K. , Kikuno, H. , Shiwachi, H. , Toyohara, H. , Fujigaki, J. , Fujimaki, H. , Asiedu, Robert , [Optimum time for collecting root samples for chromosome observation in Dioscorea spp.] , Optimum time for collecting root samples for chromosome observation in Dioscorea spp.

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Resultados de búsqueda

Effect of day length on the development of tubers in yams (Dioscorea spp.)

Optimum time for collection of root samples for chromosome observation in yams (Dioscorea spp.)

Sprouting and yield of yam (Diocorea spp.) minisetts in relation to sett size, soil moisture and agroecology

Mini tuber production using yam (Dioscorea rotundata) vines

Effect of photoperiod on the development of inflorescences in white Guinea yam (Dioscorea rotundata)

Optimum time for collecting root samples for chromosome observation in Dioscorea spp.