Compatibility studies of three way crosses in anthurium andreanum linden
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Date
2003
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Department of Plant Breeding and Genetics, College of Agriculture, Vellayani
Abstract
The evaluation of morphological characters and compatibility
analysis of 14 selected genotypes was undertaken in the present study
titled "Compatibility studies of three way crosses in Anthurium
andreanum Linden.
The analysis of variance revealed significant variation among the
14 genotypes for the 18 characters studied. This reveals genetic potential
for crop improvement.
Variability studies indicated high phenotypic, and genotypic
coefficients of variation for the characters internode length, number of
leaves and spadices per plant per year and days from emergence to
maturity of leaves. The characters with high heritability coupled with
high genetic advance values were leaf area, anthocyanin content and
inclination of candle indicating additive gene action.
Plant height was found to be positively correlated with number of
leaves or spadices per plant per year. Candle length had positive
genotypic correlation with position of candle.
Pollen fertility ranged from 9.26 per cent in PR x DT to 35.70 per
cent in Carre. Pollen emergence was completely absent in the genotype W
x LJ during the course of the study. Pollen production was high in the
r, cooler months of October to December and was suppressed in the months
from March to June.
From the cross compatibility analysis, it was seen that the
percentage of fruit bearing candles was highest for W x LJ (100.00 %)
with two crosses. The cross PR x LR with all the possible four crosses
gave a value of 79.15 per cent.
The number of fruits per candle ranged from 12 to 120. 00 x KR
had the highest average number of fruits per candle and it was lowest for
00 x PR.
The percentage of fruit set was below 50 per cent for all the
crosses. The crosses involving 00 x KR had the highest average
percentage of fruit set.
The number of days taken for germination varied from four to nine
days. The seed germination was highest (87.30 %) for the cross (00 x
KR) x H.
No cross showed 100 per cent survival beyond four to six months.
For PR x LR with all the possible four crosses, the survival percentage
was 56.80 per cent.
Scoring of the compatibility reactions based on the percentage of
fruiting candles, fruit set and seed germination on a scale ranging from
zero to nine showed the highest compatibility score of nine for (00 x KR)
x C. The best female parents identified were 00 x KR and PR x LR based
on the overall performance.
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172201