Abstract
The floral buds began to appear in mid March and started to open from first week of April in Prosopis cineraria. From mid April to mid May was the peak period of flowering. In P. juliflora, on the other hand, floral buds began to appear in early March and began to open by end of march. Pollen viability of fresh pollen was more than 85 per cent in both the species. Observations on breeding behavior found predominance of cross fertilization; the degree of selfing was far below 1 per cent (in muslin cloth bags). Reciprocal crosses showed poor success, ranging fro 0.08 per cent in P. juliflora as female parent to 0.62 per cent on P. cineraria as seed parent. Reciprocal grafting using P. juliflora as scion showed cleft method somewhat better (16.1% successful), while T-budding was the poorest. However, grafts failed to sprout using P. cineraria as scion.
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