Potential and realized yield in pearl millet (Pennisetum americanum) as influenced by plant population density and life-cycle duration

    Craufurd, P Q and Bidinger, F R (1989) Potential and realized yield in pearl millet (Pennisetum americanum) as influenced by plant population density and life-cycle duration. Field Crops Research, 22 (3). pp. 211-225. ISSN 0378-4290

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    Abstract

    A single hybrid of pearl millet, 841A×J104, was grown at four plant populations covering the range 2–20 plants m−2 under 13.5 or 15.5-h photoperiods during the vegetative phase (emergence to floral initiation) to effect a short (75-day) or long (90-day) crop duration, respectively. The effect of these treatments on tiller production, leaf-area production, dry-matter accumulation and grain-yield is described, and the relationship between radiation interception (Qi) during the phase from floral initiation to flowerng (GS2), and number of grains (yield potential) and grain-yield is examined. The treatments caused significant variation in tiller and leaf-area production, radiation interception and numbers of grains per unit area at maturity. Number of grains, which ranged from 37 to 71×103 m−2, was correlated (r2=0.83) with intercepted radiation during GS2. Thus at high plant population in the long ncrop-duration treatment, where leaf area was highest during GS2, number of grains was greatest. Grain-yield less strongly correlated (r2=0.63) with intercepted radiation during GS2 because, in crops with many grains, grain-size was reduced. Possible reasons for reduced grain-size in crops with high yield-potential are discussed.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Mandate crops > Millets
    Depositing User: Library ICRISAT
    Date Deposited: 15 Dec 2011 13:24
    Last Modified: 12 Mar 2014 11:00
    URI: http://oar.icrisat.org/id/eprint/4970
    Official URL: http://dx.doi.org/10.1016/0378-4290(89)90093-2
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
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