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Variety HD 4502 appeared to
be the dwarfest, stable and responsive and hence is desirable for
breeding dwarf types. Similarly, varieties CC 530, H19, H 22 and
R 6039 had low height, b value near one and
S-2d near zero. Amongst aestivum varieties WH147
and WH 283 were stable and responsive for plant height and their
performance over environments, can be predicted. Variety Meghdoot
gave maximum tillers followed by WH 825, CPAN 6038, WH 822 and CPAN
6039. These varieties also had unit regression and nonsignificant
non-linear component and hence were most desirable for this trait.
Varieties BJ yellow, WH 820, V 43, R 6009 and R 6029 also had high
tillering, but their regression values were more than unity. Hence
these were suitable for better environment. Among aestivum
wheats WH 157, WH 147 and HD 2009 had high mean, S-2d
non-significant but regression values more than unity hence were more
suitable for better environment.
Maximum total biological yield was produced by genotypes V 45, CC
530, BJ. yellow, V 41, R 6009, CPAN 6038 and CPAN 6048, however,
their b values were above average indicating their suitability for
better environment. Varieties R 911, R 6011, WH 822, Sapi's and JU 72
also produced higher biological yield, had b value near unity and
S-2d equal to zero indicating that these were the most
stable and responsive varieties for biological yield. Variety C 306
produced maximum biological yield, had average linear regression and
nonsignificant S-2d, hence was stable and responsive.
Variety WH147 had high biological yield, b value less than unity and
S-2d non-significant and, therefore, was more suitable for
poor/medium fertility situations.
For harvest index, varieties WH 822, CPAN 6058, R 6011, H 22 and WH
823 were found to be the most desirable genotypes because of their
high mean performance, stable and responsive behaviour. Varieties WH
820, CPAN 6038, CPAN 6048, JU 133, were more suited to better
environment. Among aestivum wheats WH 147 gave high mean,
linear regression above average and S-2d near zero and
hence may be taken as suitable for better environment while C 306 was
more suited to poor environment. Variety WH 283 appeared to be the
stable and responsive variety with high mean. For number of grains
per ear, varieties WH 822, Sapi's, JU 133, WH 823 and V 44 were
desirable because of their high mean, stable and responsive
behaviour. Varieties H 22, Meghdoot, WH 825, WH 826, V 41, V
45, CPAN 6038 were more suitable for better environment. On the other
hand varieties V 43, R 6011, CPAN 6048 were more suitable for poor
environment. In aestivum, WH 157, WH 147, WH 283 and C 306 had
average performance, responsive and stable behaviour.
Varieties CC 530, H 22, WH 820, WH 826 and V 41 produced average
number of spikelets per spike, b value above average and
S-2d equal to zero indicating their suitability for better
environment, while, V 42, V 207, R 6011 suited more to poor
environment. Varieties WH 825, CPAN 6048, WH 822, CPAN 1478 and JU
133 gave high mean, stable and responsive behaviour. Amongst
aestivum wheat varieties WH 157, Wh 147 and C 306 were
desirable since they had high mean, stable and responsive behaviour.
HD2009 and WH283 were suitabl for poor environment. Varieties WH 825
,CPAN 6038, HI 8078,WH 822and V 44 had high grain weight, b value
near unity and S-2d near zero indicating that these were
stable and responsive for grain weight. Varieties V 45, V 207, R
6009, R 6029, R 6039, R 6011, CPAN 6048 also produced high grain
weight but were unstable hence their performance cannot be predicated
over environments. Among aestivum wheats, WH 157, WH 283 and C
306 were stable and responsive with average mean performance.
Varieties WH 147 and HD 2009 had significant S-2d value
and hence they were not predictable for this trait.
If we review critically the overall situation from Table
2, it becomes
obvious that variety WH 822 appeared to have high mean, stable and
responsive behaviour for all the traits except plant height for which
it had low mean, non-significant S-2d and low b. Variety
HI 8078 was good for four characters, WH 823, CPAN 1478 and Sapi's
were good for three characters. These varieties were also
better/average for almost all other traits though not shown in this
table.
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