RA 00015.pdf - OAR@ICRISAT

0.75
0.65
0.55
r =+ 0.802**
= - 0 . 2 3 2 + 0.165 x
lower than in kabuli cultivars, which ranged
from 56.1 to 59.7 percent. Other consistent
differences included higher crude fiber content in
desi cultivars than in kabuli cultivars, and lower
fat content in desi cultivars.
0.45
International Cooperation
0.35
0.25
2.5 3.0 3.5 4.0 4.5 5.0
Total nitrogen (%)
Figure 42. Relationship between total nitrogen
and nonprotein nitrogen in chickpea.
Furnishing of superior breeding material to local
breeding programs is the most hopeful way of
making progress in increasing chickpea yields. In
the past year we distributed screening nurseries
of 100 early and 100 late-maturing advanced
lines from our breeding program. Results have
been received on the early group from 11 locations
and on the late group from 13 locations,
all in India. Results from nine other countries
were not received in time for analysis.
limiting Amino Acids
As in most legumes, the sulfur-containing amino
acids-methionine and cystine-are usually deficient
in chickpea. We analyzed 30 samples with
a range of nitrogen content from 2.40 to 4.85
percent for total sulfur. Although differences in
sulfur percentage were small, there appeared to
be an inverse relationship between percentage N
and percentage S (Table 40). The sulfur/nitrogen
ratio expressed as percent emphasizes the inverse
trend.
Similar results were obtained when methionine
content was determined by microbiological
assay for 78 samples. There was a negative and
significant correlation between percent protein
and methionine as percent of protein (Fig 43).
These results indicate that the additional protein
formed in high-protein lines may consist of
fractions which are low in the sulfur amino acids.
Composition of Some Chickpea Cultivars
Five kabuli and five desi.cultivars were analyzed
for protein, starch, soluble sugars, fat, crude
fiber, and ash content. Protein (N x 6.25) ranged
from 19,4 to 24.4 percent, with no difference
between desi and kabuli (Table 41). Starch
content in desi cultivars (47.2 to 52.5%) was
Table 40. Total sulfur and nitrogen in 30 chickpea
germplasm lines.
High N lines (12)
Medium N lines (8)
Low N lines (10)
1.6
1.5
1.4
1.3
1.2
1.1
r = - 0 . 4 5 1 * *
+ 1.621 - 0 . 0 1 5 x
N S S/N
(%)
3.85-4.85 0.17-0
.21 3.7-5.0
3.05-3.84 0.1 7-0
.23 4.5-6.9
2.40-3.04 0.1 8-0
.24 6.5-8.8
17 19 21 23 25 27 29 31
Protein (%)
Figure 43. Relationship between protein and
methionine contents in chickpea.
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