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1. RAPID MULTIPLICATION
TECHNIQUE IN COLACASIA
JENIN R
2021005036

2. • Botanical name : Colocasia esculenta
• Family : Araceae
• Chromosome no : 2n = 28

3. INTRODUCTION
• The commercial planting material used in colacasia are
corms or cormels
• Among different methods in rapid multiplication,meristem
culture from lateral buds ofcorm is also used.such method is
costly and not economically feasible
• Hence efforts were made to use small pieces of corms as
planting material
• Any part of the tuber surface is capable of producing a
sprout when kept under favourable condition

4. MATERIALS AND METHODS
• Size of planting material were selected as 10 g and 50
pieces of tubers were sown on nursery bed(60x60 cm)
• Seven different media were used for germination of
minisetts.sprouting % was recorded upto 21 days.survival
% was recorded at 60 days after transplanting

5. EFFECT OF NURSERY BED MEDIA ON SPROUTING AND
SURVIVAL PERCENTAGE IN COLACASIA
Media Sprouting % ( at 21 days) Survival % (at 60 DAT)
Sand 88.67 69.33
Soil 68.00 53.33
Saw dust 86.00 63.33
Leaf mould 48.67 32.00
Sand + soil 65.33 57.33
Sand + saw dust 86.00 62.00
Sand + leaf mould 51.33 35.33

6. • Three sizes of minisetts were selected and sown on nursery bed of sand as
above with 50 pieces each
• Seed treatment was followed and then transplanted.the data of different sizes
was recorded and analysed statistically

7. EFFECT OF SIZE OF MINISETTS ON SPROUTING AND
SURVIVAL % IN COLOCASIA
Weight of minisetts Sprouting % (at 21 DAS) Survival % (at 60 DAT)
5g 58.29 46.86
10g 89.14 70.57
15g 89.42 70.86

8. RESULTS
• Maximum sprouting was recorded in sand and on sand + saw
dust (86.00%) which were significantly superior to other media
• With respect to survival percentage sand,saw dust and sand +
saw dust recorded higher survival percentage
• 10g and 15g were significantly superior over lower size
minisetts

9. THANK YOU