Evaluation of genetic stock of sanghupushpam (Clitoria ternatea L.) for yield, Alkaloid content and nitrogen fixing potential
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Date
2000
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Department of Horticulture, College of Agriculture, Vellayani
Abstract
The present study entitled “Evaluation of genetic stock of
‘Sanghupushpam’ (Clitoria ternatea L.) for yield, alkaloid content and
nitrogen fixing potential” was carried out at the Department of Horticulture,
College of Agriculture, Vellayani from June 1999 to January 2000. Seeds of
twenty different accessions were collected from various locations from inside
and outside the state. Thirteen accessions having high rate of seed
germination were raised as intercrop in young coconut garden and maintained
till seed maturation stage. The performance of the accessions in terms of
growth, yield and physiological parameters were evaluated.
Growth and yield parameters with respect to shoot, pod, root and root
nodule characters were evaluated. Physiological parameters evaluated
included leaf area index, leaf area duration, net assimilation rate, crop growth
rate, relative growth rate, absolute growth rate and harvest index. Number of
effective nodules was taken as an index for assessing nitrogen fixing potential
of the plant.
Leaf yield, shoot yield and root yield were significantly superior in the
accession MP-90. MP-83 recorded significantly superior pod yield. The
number of nodules was the highest in accessions MP-76 and MP-82. Crude
alkaloid content was significantly superior in seeds of MP-74 and MP-76.
Six accessions were selected based on yield , nodule characters and
crude alkaloid content viz ., MP-90, MP-74, MP-83, MP-78, MP-76 and
MP-82.
Results of the present study indicated that Clitoria ternatea, is not a
good proposition as an intercrop in young coconut garden. However, it may
be worth studying the performance of the crop as a pure crop under open
condition or as an intercrop in coconut gcirden with comparatively lesser
shade (less than 50 per cent) than the situation of the present study.
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