المستخلص: |
The effect of peat moss and sand each alone and in 8 different mixing ratios (5 part of peatmoss mix with 1, 2, 3, 4 and 5 part of sand and 1 part of peatmoss mix with 1, 2, 3, 4, and 5 parts of sand) on the survival and growth of Smooth cayenne pineapple plantlets during acclimatization stage were compared. The highest plantlets survival (100 %) obtained in pots filled with sand alone (0 : 1) and mix of 1 part of peat moss and 3 parts of sand (1: 3) while the lowest survival (67 %) obtained on pots filled with 5 parts of peat moss and 3 parts of sand (5: 3). The tallest (120 mm) and heaviest (2.94 g) plantlets, on the other hand, obtained in pots filled with mix of 1 part peat moss and 4 parts sand (1: 4) and equal parts of sand and peat moss (1: 1) respectively while mixing of 5 parts of peat moss with 4 parts of sand (5: 4) resulted in the shortest (103 mm) and lightest plantlets (2.42 g). The difference of 33 % in plantlets survival among the various mixing ratio indicated that proper selection of substrate during acclimatization stage is very crucial for commerciality of any micro propagation system.
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