A total of five and ten field experiments on maize, varietal research was conducted in Qn station
and on farm during the summer season of 2000 and 2001, respectively under HMRP funding.
Qnfarm experiments were carried out in DR sitf#S. During summer 2000, nqn-significant grain
yield differences of the tested genotypes in the in the CVTs (full season and early maturing),
CIMMYI' hybrid trial sub-tropical white and farmers field trial was found Highly significant ·
tes~lt f"Or grain yield was observed only in quality protein materials. The highest grain yield
·1'\'as prodJ~:ced 'by CHZ99059 (10404 kglha) followed by CHZ99054 (9918 kg/ha),· QS7705
. · (~497 ·kg/ha) and CHZ990508 (9355 kg/ha). During summer 200.1. in sub-n·opical intermediate
white QP M trial sixteen of the Menty ·entries produced hihwher grain yield than the best check
.: · Arun-1 (5502 kg/ha), .Population 68 Co QPM (8603 kg/ha), Population 67 Cl QPM (8425
kg/ha), S9JSIWQ (8.345 "kg/ha) and S99SIWQ:(8325 ·kglha) produced not only better yield but
also silked.eirlier or at par with standard check and produced.shorter plant and ear height as
co_mpared to checks. Eighteen of the 28 tested hybrids in CIMMYT hybrid trial sub-tropical
white produce~ 50% more grain yield than the best check Arun-1 (~813 kg/ha). Hybrids
namely CMS935005. (U 900 kglha), CMS975989 (11370 kglha), CMI'996415 (11150 kg/ha),
. ·CMSQ995907 (11140 kglha), CMSQ990569 (10360 kgfha) and CMI'Q98302l (10610 kglha)
· produced grain yield 80.1 to 104.7% highe': than the best checkArun-1. But all the promising
: . hybrids were found. taller, ·higher ear placement and they tool onger period for maturity (8-26
·days) as compared to fitll season check. Manakamana-1. Eighteen of the total evaluated
.hybrids .exhibited prolific character. Three way hybrid nam~ly CMI'996415 was ·the most
· prolific (134). Mean grain yield, days to SO% tasseling and silking, plant stand/ha imd ears/ha
shawed non-significant results (P>0.05) statistically for the entries tested in intermediate yield
triai. In co-ordinoter;f.:wiriety· trial (early set), nong of the _tested genotypes out-yielded· (2.5-
35.5%) the local check. The highest grain yield 1-vas produced by EV 8766 followed by Pool 27 ·
(7282 /cg!haj, .drim-4 (6890 kg/ha) and Z97 EWB-F2#, (6458 kg/ha). These genotypes were
· . · jouJ?d superior to St. check Anm~2 (6020 kglha). Pool17JJ; and Pool15E silked earlier (54 and
. . : 55 DAS •. respectively) among the teste.d ones but their grain yield peiformance (5294 and 3663
kg/ha). anti h~~ cov(!r rating were poorer than farmer's 5.731 kglha). In co-ordinated variety
tjial (full seasqn s.etJ, company hybrid Bio-seed '9781 (9834 kglha) produced 64% more grain
yield than Da.ilekh local (5887 kglha} followed by Population 45 CB (7321-kg/ha), [P501-SR
· Cfl-F_ll] (7! 54 _kg/ha) arid Tlaltizapan 9644 (7140 kglha). Grain·yield, plant stand/ha ·and
earslha of the entries ·were found non-significant in multi-location trial. In co-ordinated
farJ?lers' field trial (early maturing set) highly sig-tztflcant results (P<O. OJ) were recorded for
grain yield. Farmers' variety produced yield at par with improved promising genotypes (Aru.n-
. · ~ •.. Aru.n-4 and Poo116). Reduced plant and ear h~ights as well as shorter duration (o silk were
· rec01:dedfor Pooi 15E and Pool17E but they prod~:iced 18.9 and 33.8% respectively less grain
.yi~ld· than farmers! variety. Most of the quantitative traits viz, g~·ain yield, days to 50%
(asseling and silking, plant and ear height; plan! stand/ha and number of ears/ha· were found
· no1J-significant in co-ordinated farmers field trial-full seasori set. Thus, ihese evaluated entries
. found promising in previous years were ai jiar w.ith farmers' variety. Only the husk ·cover
tlifferences among ~lie. en:tries were observed highly signifir;ant, ZM 621 produced the poorest
,.,usk ·cover (5) and rest ofthe genotypes was at par in this aspect (1.33-1.67, 83 lines .were
.developed from the 30 superior landraces froTn the Mid and Far Western hills in order to .
. develop local germplasm based. white population. Thirty local landraces were erossed with
· . ·. · .. : Mana~amana 1 and Arim 1 in order to identify the superior varietal crosses (non-con~entional
·. . hybrids) than·their parents (landraces).

A total of five and ten field experiments on maize, varietal research was conducted in Qn station
and on farm during the summer season of 2000 and 2001, respectively under HMRP funding.
Qnfarm experiments were carried out in DR sitf#S. During summer 2000, nqn-significant grain
yield differences of the tested genotypes in the in the CVTs (full season and early maturing),
CIMMYI' hybrid trial sub-tropical white and farmers field trial was found Highly significant ·
tes~lt f"Or grain yield was observed only in quality protein materials. The highest grain yield
·1'\'as prodJ~:ced 'by CHZ99059 (10404 kglha) followed by CHZ99054 (9918 kg/ha),· QS7705
. · (~497 ·kg/ha) and CHZ990508 (9355 kg/ha). During summer 200.1. in sub-n·opical intermediate
white QP M trial sixteen of the Menty ·entries produced hihwher grain yield than the best check
.: · Arun-1 (5502 kg/ha), .Population 68 Co QPM (8603 kg/ha), Population 67 Cl QPM (8425
kg/ha), S9JSIWQ (8.345 "kg/ha) and S99SIWQ:(8325 ·kglha) produced not only better yield but
also silked.eirlier or at par with standard check and produced.shorter plant and ear height as
co_mpared to checks. Eighteen of the 28 tested hybrids in CIMMYT hybrid trial sub-tropical
white produce~ 50% more grain yield than the best check Arun-1 (~813 kg/ha). Hybrids
namely CMS935005. (U 900 kglha), CMS975989 (11370 kglha), CMI'996415 (11150 kg/ha),
. ·CMSQ995907 (11140 kglha), CMSQ990569 (10360 kgfha) and CMI'Q98302l (10610 kglha)
· produced grain yield 80.1 to 104.7% highe': than the best checkArun-1. But all the promising
: . hybrids were found. taller, ·higher ear placement and they tool onger period for maturity (8-26
·days) as compared to fitll season check. Manakamana-1. Eighteen of the total evaluated
.hybrids .exhibited prolific character. Three way hybrid nam~ly CMI'996415 was ·the most
· prolific (134). Mean grain yield, days to SO% tasseling and silking, plant stand/ha imd ears/ha
shawed non-significant results (P>0.05) statistically for the entries tested in intermediate yield
triai. In co-ordinoter;f.:wiriety· trial (early set), nong of the _tested genotypes out-yielded· (2.5-
35.5%) the local check. The highest grain yield 1-vas produced by EV 8766 followed by Pool 27 ·
(7282 /cg!haj, .drim-4 (6890 kg/ha) and Z97 EWB-F2#, (6458 kg/ha). These genotypes were
· . · jouJ?d superior to St. check Anm~2 (6020 kglha). Pool17JJ; and Pool15E silked earlier (54 and
. . : 55 DAS •. respectively) among the teste.d ones but their grain yield peiformance (5294 and 3663
kg/ha). anti h~~ cov(!r rating were poorer than farmer's 5.731 kglha). In co-ordinated variety
tjial (full seasqn s.etJ, company hybrid Bio-seed '9781 (9834 kglha) produced 64% more grain
yield than Da.ilekh local (5887 kglha} followed by Population 45 CB (7321-kg/ha), [P501-SR
· Cfl-F_ll] (7! 54 _kg/ha) arid Tlaltizapan 9644 (7140 kglha). Grain·yield, plant stand/ha ·and
earslha of the entries ·were found non-significant in multi-location trial. In co-ordinated
farJ?lers' field trial (early maturing set) highly sig-tztflcant results (P<O. OJ) were recorded for
grain yield. Farmers' variety produced yield at par with improved promising genotypes (Aru.n-
. · ~ •.. Aru.n-4 and Poo116). Reduced plant and ear h~ights as well as shorter duration (o silk were
· rec01:dedfor Pooi 15E and Pool17E but they prod~:iced 18.9 and 33.8% respectively less grain
.yi~ld· than farmers! variety. Most of the quantitative traits viz, g~·ain yield, days to 50%
(asseling and silking, plant and ear height; plan! stand/ha and number of ears/ha· were found
· no1J-significant in co-ordinated farmers field trial-full seasori set. Thus, ihese evaluated entries
. found promising in previous years were ai jiar w.ith farmers' variety. Only the husk ·cover
tlifferences among ~lie. en:tries were observed highly signifir;ant, ZM 621 produced the poorest
,.,usk ·cover (5) and rest ofthe genotypes was at par in this aspect (1.33-1.67, 83 lines .were
.developed from the 30 superior landraces froTn the Mid and Far Western hills in order to .
. develop local germplasm based. white population. Thirty local landraces were erossed with
· . ·. · .. : Mana~amana 1 and Arim 1 in order to identify the superior varietal crosses (non-con~entional
·. . hybrids) than·their parents (landraces).