Axillary proliferation and tuberisation of Dioscorea cayenensis–D. rotundata complex View Full Text


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Article Info

DATE

2007-06-13

AUTHORS

Paul Ondo Ovono, Claire Kevers, Jacques Dommes

ABSTRACT

Yams (Dioscorea spp) are tuber crops used as staple food in Africa because of their nutritional value. However agronomic constraints, phytosanitary problems and the lack of good healthy planting material restrict their production. In contrast to the inefficiency of traditional method of planting, tissue culture techniques allow to increase the multiplication and the rapid production of pathogen- free plant material. This work was undertaken to provide farmers in African countries with healthy microplants and microtubers as seeds. In vitro nodal segments of two varieties of local yams D. cayenensis–D. rotundata complex (cv. ‘Singo’, cv. ‘Singou’ and cv. ‘Gnidou’) were micropropagated on the modified medium of Murashige and Skoog. The morphogenesis, the growth of microplants and microtuber formation have been found to be controlled by external factors that act individually and synergistically. Addition of kinetin (2 mg l−1) to the culture media could reduce multiplication rate (node number) of some clones. An increase of the sucrose concentration from 3% to 5% induced no change in the multiplication and tuberisation parameters. An important reduction of the multiplication (shoot number, height and node number) and the tuberisation (tuber number and length) was observed with 8% sucrose. Multiplication (shoot and node number) was increased in the presence of jasmonic acid (10 μM). JA also induced an increase of tuber number in the absence of Kin. Multiplication of yam by in vitro growth of nodal segments is a way for rapid clonal multiplication and could allow solving the problem of lack of seed material faced by farmers. This method could also be used for multiplication of elite cultivars, independently of the growing season. More... »

PAGES

107-114

References to SciGraph publications

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  • 2004-01. Regeneration and multiplication of Dioscorea alata germplasm maintained in vitro in PLANT CELL, TISSUE AND ORGAN CULTURE (PCTOC)
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  • 2000-09. Effects of jasmonic acid and its methylester on in vitro microtuberisation of three food yam (Dioscorea) species in PLANT CELL REPORTS
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  • 1992-01. Stimulatory effects of jasmonic acid on potato stem node and protoplast culture in JOURNAL OF PLANT GROWTH REGULATION
  • 2003-04. Rapid clonal propagation of Dioscorea zingiberensis in PLANT CELL, TISSUE AND ORGAN CULTURE (PCTOC)
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  • 2003-07. Effect of jasmonic acid on developmental morphology during in vitro tuberization of Dioscorea alata (L.) in PLANT GROWTH REGULATION
  • 1991-09. In vitro tuberization in Dioscorea alata L. ‘Brazo fuerte’ and ‘Florido’ and D. abyssinica Hoch in PLANT CELL, TISSUE AND ORGAN CULTURE (PCTOC)
  • 1996-07. Occurrence of jasmonic acid in organs of Solanum tuberosum L. and its effect on tuberization in PLANT GROWTH REGULATION
  • 1996-10. Plant hormones and plant growth regulators in plant tissue culture in IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY - PLANT
  • 1997-07. The effect of jasmonic acid, sucrose and darkness on garlic (Allium sativum L. cv. Ptujski jesenski) bulb formation in vitro in IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY - PLANT
  • 1997-03. Comparative studies on potato tuber development using an in vitro tuber induction system in BIOLOGIA FUTURA
  • 1995-06. Effect of growth regulators concentrations on morphological development of meristem-tips in Dioscorea cayenensis-D. rotundata complex and D. praehensilis in PLANT CELL, TISSUE AND ORGAN CULTURE (PCTOC)
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    http://scigraph.springernature.com/pub.10.1007/s11240-007-9238-z

    DOI

    http://dx.doi.org/10.1007/s11240-007-9238-z

    DIMENSIONS

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    61 culture medium
    62 culture techniques
    63 elite cultivars
    64 external factors
    65 factors
    66 farmers
    67 food
    68 formation
    69 growth
    70 growth of microplants
    71 healthy microplants
    72 important reduction
    73 increase
    74 inefficiency
    75 jasmonic acid
    76 kin
    77 kinetin
    78 lack
    79 local yams D. cayenensis
    80 material restrict
    81 materials
    82 medium
    83 medium of Murashige
    84 method
    85 microplants
    86 microtuber formation
    87 microtubers
    88 morphogenesis
    89 multiplication
    90 multiplication rate
    91 nodal segments
    92 number
    93 nutritional value
    94 parameters
    95 pathogen-free plant material
    96 phytosanitary problems
    97 plant material
    98 planting
    99 presence
    100 problem
    101 problem of lack
    102 production
    103 proliferation
    104 rapid clonal multiplication
    105 rapid production
    106 rate
    107 reduction
    108 restrict
    109 rotundata complex
    110 season
    111 seed material
    112 seeds
    113 segments
    114 staple food
    115 sucrose
    116 sucrose concentration
    117 technique
    118 tissue culture techniques
    119 traditional methods
    120 tuber crops
    121 tuber number
    122 tuberisation
    123 tuberisation parameters
    124 values
    125 variety
    126 way
    127 work
    128 yam
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