Page 7 - International Journal of Horticulture

Basic HTML Version

International Journal of Horticulture 2012, Vol.2, No.5, 21
-
24
http://ijh.sophiapublisher.com
24
Table 3 Comparison of magnitude and direction of association among yield attributing character in different populations of okra
Sl no.
Characters
F
2
Populations
BIP
SC
DC
1
Fruit yield with
a) Plant height (cm)
0.912**
0.543**
0.663**
b) Number of fruits per plant
0.929**
0.819**
0.900**
c) Average fruit weight (g)
0.859**
0.719**
0.811**
d) 100 seed weight (g)
0.871*
0.899*
0.725*
2
Plant height with
a) Number of fruits per plant
0.756**
0.651*
0.555*
b) Average fruit weight (g)
0.656**
0.552
0.337
c) 100 seed weight (g)
0.567
0.452
0.391
3
Number of fruits per plant with
a) Average fruit weight (g)
0.652*
-0.493
-0.667
b) 100 seed weight (g)
0.743
0.306
0.412
4
Average fruit weight with
a) 100 seed weight (g)
0.689
0.456
0.617
In general in all the crop plants negative associations
do exists between the two important yield
components. For example boll number and boll
weight in cotton, pod number and pod length in
pulses, and grain number per spike and grain size in
cereals. Breeders tend to break these undesirable
negative associations between yield components.
References
Hanson C.H., Robinson H.R, and Comstock R.S., 1956, Biometrical
studies of yield in segregating population of Korea Lespedeza,
Agron. J., 48: 268-272, http://dx.doi.org/10.2134/agronj1956.
0002196200 4800060008x
Kearsay K.J., 1965, Bio metrical analysis of a random mating population:
A comparison of five experimental designs, Heredity, 20: 205-233,
http://dx.doi.org/10.1038/hdy.1965.31
Nematullah and Jha P.B., 1993, Effect of biparental mating in wheat, Crop
Improv., 20 (2): 173-178
Paramesharappa K.G., Rudra Naik V., and Bentur M.G., 2009, Impact of
biparental mating on genetic variability and path analysis in
safflower, Karnat. J. Agric. Sci., 22(1):44-46
Prasad R., 1984, Genetic effects of biprental mating and selection for
certain quantitative traits in Oat. Ph. D. Thesis. G.B. Pant University
of agriculture and Technology, Pantnagar, India
Robinson H.F., Comstock R.E., and Harvery V.H., 1949, Estimates of
heritability and degree of dominance in corn, Agron. J., 41: 353-359,
http://dx.doi.org/10.2134/agronj1949.00021962004100080005x
Shanthakumar G., and Salimath P.M., 2010,
Studies on variability,
heritability and genetic advance for fruit yield and its component
traits in early segregating generation in bhendi [
Abelmoschus
esculentus
(L.) Moench], Indian J. Plant Genet. Resour., 23(3):
296-302
Singh B., Pal A.K., and Sanjay S., 2006, Genetic variability, correlation
analysis in okra [
Abelmoschus esculentus
(L.) Moench],
Indian J.
Hort., 63(3)