Abstract
AbstractThe factors controlling productivity (dry matter production) in a pearl millet (Pennisetum americanum L. Leeke) hybrid BJ‐104 and its inbred parents, J‐104 and 5141‐A, were investigated using the harvest interval and curve‐fitting methods. During initial stages, the hybrid showed highest total dry weight, leaf dry weight and leaf area, than the inbred lines. However, with age these differences decreased considerably. The male parent attained total dry weight almost equal to the hybrid by d 45, whereas the female parent attained it by d59.The derived growth parameters like RGR, LAR, LWR and SLA showed strong ontogenic decline. Further, considerable cultivar variations were also recorded. Importance of the growth parameters in determining productivity is discussed and it is emphasized that higher accumulation of dry matter during initial seedling stages may be an important factor.
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