Heterosis studies in diallel crosses of maize for yield and yield attributing traits in maize ( Zea mays L.) over locations
Table 6. The top hybrids identified based on overall performance in the present investigation
Standard Heterosis
Average
Hetero
Mean
sca effect
Hybrid
Stability
Heterosis
beltios
Over DHM-
Over
performance
an
117
900M Gold
BML- 15 X BML-2910
226.21**
205.13**
42.79**
22.40**
161.89
75.53**
Stable
BML-6 X BML-3044
141.68**
113.72**
27.80**
9.55**
144.90
38.91**
Stable
BML-2782 X BML-7
191.59**
113.18**
24.71**
6.90
141.39
35.63**
Stable
BML-7 X BML-3044
130.72**
106.00**
20.50**
3.29
136.62
30.66**
Stable
CM-211 X BML-7
138.61**
92.36**
12.52**
-3.55
127.58
29.43**
Stable
CM-211 X BML-6
133.08**
86.35**
11.44**
-4.48
126.34
28.16**
Stable
BML-5322-5 X BML-3044
101.00**
70.52**
12.49**
-3.58
127.53
28.10**
Stable
BML-6 X BML -2
99.43**
88.12**
12.50**
-3.57
127.54
20.51**
Stable
BML -2782 X BML-6
158.19**
87.46**
12.10**
-3.91
127.10
21.31**
Stable
5,ȱ CM-ȱ 211ȱ Xȱ BML-5233-5ȱ andȱ BML-2486ȱ Xȱ BML-
Ear height (cm)
2.ȱ Theseȱ resultsȱ areȱ inȱ confirmationȱ withȱ findingsȱ
Higherȱ earȱ heightȱ isȱ aȱ desirableȱ featureȱ ofȱ maizeȱ
ofȱ Kalsyȱ andȱ Sharmaȱ (1970),ȱ Murthyȱ et al. ȱ (1981),ȱ
hybrids.ȱForȱthisȱtraitȱasȱmanyȱasȱ31ȱhybridsȱrecordedȱ
Appunuȱ etal. ȱ(2007),ȱBhavanaȱ etal. (2011),ȱRamȱReddyȱ
significantȱpositiveȱheterosisȱwithȱrangeȱofȱ-19.37ȱtoȱ
et al. ȱ(2011)ȱandȱRajeshȱ et al. ȱ(2014)ȱandȱRuswandiȱ et
103.04ȱ perȱ centȱ andȱ 24ȱ hybridsȱ forȱ heterobeltiosisȱ
al .ȱ(2015).
withȱaȱrangeȱofȱ-26.33ȱtoȱ92.82.ȱHowever,ȱ16ȱhybridsȱ
Plant height (cm)
registeredȱ significantȱ positiveȱ standardȱ heterosisȱ
overȱcheckȱDHM-117ȱwithȱaȱrangeȱofȱ-35.92ȱtoȱ32.36ȱ
Forȱplantȱheightȱtheȱrangeȱofȱheterosis,ȱheterobeltiosisȱ perȱ centȱ andȱ -21.71ȱ toȱ 61.70ȱ perȱ centȱ overȱ 900ȱ Mȱ
andȱstandardȱheterosisȱvariedȱfromȱ-10.31ȱtoȱ78.98,ȱ Gold.ȱTheȱhybridȱBML-6ȱXȱBML-2910ȱrecordedȱhighȱ
-16.69ȱtoȱ54.60,ȱ-35.17ȱtoȱ22.32ȱperȱcentȱoverȱDHM-
averageȱheterosisȱforȱthisȱtrait.ȱWhereasȱtheȱhybridȱ
117ȱ andȱ -32.68ȱ toȱ 27.02ȱ perȱ centȱ overȱ 900ȱ Mȱ Goldȱ CM-211ȱXȱBML-3044ȱrecordedȱhighȱheterobeltiosis,ȱ
respectively,ȱwithȱ37,ȱ29,ȱ3ȱandȱ4ȱcrossesȱexhibitingȱ highȱ standardȱ heterosisȱ overȱ DHM-117ȱ andȱ 900ȱ
positiveȱ significantȱ heterosis,ȱ heterobeltiosisȱ andȱ Mȱ Goldȱ alongȱ withȱ highȱ per se ȱ performance.ȱ Theȱ
standardȱheterosisȱoverȱDHM-117ȱandȱ900ȱMȱGoldȱ performanceȱ ofȱ theȱ hybrid,ȱ CM-211ȱ Xȱ BML-6ȱ wasȱ
respectively.ȱTheȱhybrids,ȱCM-211ȱXȱBML-15,ȱBML-
stableȱoverȱlocations.ȱTheseȱresultsȱareȱcomparableȱ
7ȱ Xȱ BML-3044ȱ andȱ BML-2ȱ Xȱ BML-3044ȱ recordedȱ withȱ findingsȱ Murayaȱ et al. ȱ (2006),ȱ Bhavanaȱ et al.
highȱ standardȱ heterosisȱ overȱ twoȱ checks,ȱ DHM-
(2011),ȱRamȱReddyȱ et al. ȱ(2011),ȱFarhanȱ et al. ȱ(2012)ȱ
117ȱ andȱ 900ȱ Mȱ Gold.ȱ Whereasȱ theȱ hybridȱ BML-15ȱ andȱAbdelȱ et al .ȱ(2014).
XȱBML-2910ȱrecordedȱhighȱaverageȱheterosisȱalongȱ
withȱ per se ȱ performanceȱ(Tableȱ 5).ȱ Theȱ bestȱ hybridȱ Ear girth (cm)
forȱ heterobeltiosisȱ recordedȱ wasȱ CM-211ȱ Xȱ BML-
Outȱ ofȱ 45ȱ hybrids,ȱ 38ȱ hybridsȱ forȱ heterosis,ȱ 26ȱ forȱ
15.ȱ Theȱ resultsȱ wereȱ inȱ comparableȱ withȱ findingsȱ
heterobeltiosisȱandȱtwoȱhybridsȱoverȱDHM-117ȱandȱ
ofȱ Chattopahdyayȱ andȱ Dhimanȱ (2005),ȱ Murayaȱ et
900ȱMȱGoldȱforȱearȱgirthȱwasȱobservedȱinȱtheȱrangeȱ
al. ȱ (2006),ȱ Appunuȱ et al. ȱ (2007),ȱ Deviȱ et al. ȱ (2007),ȱ
ofȱ -7.10ȱ toȱ 38.95,ȱ -9.99ȱ toȱ 32.82,ȱ -21.48ȱ toȱ 9.49ȱ andȱ
Frascaroli et al. ȱ (2007),ȱ Ramȱ Reddyȱ et al. (2011),ȱ
-21.05ȱtoȱ10.09ȱperȱcent,ȱrespectively.ȱTheȱpromisingȱ
Melkamuȱ et al. ȱ(2013)ȱandȱAsifȱ et al. (2014).
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