Combining Ability of Some Maize Inbreds and Their Hybrids ( Zea Mays L. ) Under Water Stress Conditions

2014 ◽  
Vol 18 (2) ◽  
pp. 347-371
Author(s):  
S. A. Okasha ◽  
M. A. Al-Ashry ◽  
A. Aly ◽  
T. Bayoumy ◽  
Manal Hefny
Keyword(s):  
Zea Mays ◽  
Water Stress ◽  
Combining Ability ◽  
Zea Mays L ◽  
Stress Conditions ◽  
Maize Inbreds

scholarly journals Heterotic expression in inbreds derived from four different base populations in maize (Zea mays L.).

1970 ◽  
pp. 10-15
Author(s):  
B. Bharathiveeramani ◽  
M. Prakash ◽  
A. Seetharam
Keyword(s):  
Zea Mays ◽  
Combining Ability ◽  
Zea Mays L ◽  
Commercial Exploitation ◽  
Single Cross ◽  
Standard Heterosis ◽  
Maize Inbreds ◽  
Hybrid Mixtures ◽  
Single Cross Hybrids

The concepts of combining ability and heterosis are the fundamental tools for enhancing productivity of different crops. The main objective is to study the usefulness of inbreds derived from four different base populations namely advanced generations of single cross hybrids, three way cross hybrids, hybrid mixtures and composites by analyzing the combining ability of inbreds and crosses derived and the heterosis obtained for important characters. One hundred and forty four maize inbreds derived from four different base populations namely advanced generations of single cross hybrids, three way cross hybrids, hybrid mixtures and composites were studied for their heterotic expression. The results indicated that composite and hybrid mixture base populations shall be of great use in deriving genetically divergent inbreds and single cross hybrids with significant standard heterosis suitable for commercial exploitation.

scholarly journals Combining Ability for Quantitative Traits Under Normal And Heat Stress Conditions in Maize (Zea Mays L.)

2021 ◽  
Vol 50 (3) ◽  
pp. 659-669
Author(s):  
Neha Rani ◽  
Ram Balak Prasad Nirala ◽  
Awadhesh Kumar Pal ◽  
Tushar Ranjan
Keyword(s):  
Zea Mays ◽  
Heat Stress ◽  
Normal Condition ◽  
Combining Ability ◽  
Zea Mays L ◽  
Stress Conditions ◽  
High Yield ◽  
Components Of Variance ◽  
Reciprocal Crosses ◽  
Heat Stress Condition

Investigation was carried out to ascertain the genetic architecture for heat tolerance and yield components from diallel crosses in maize (Zea mays L.). The combining ability in both the normal and heat stress conditions revealed highly significant mean squares due to general combining ability (GCA) and specific combining ability (SCA) in both the direct and reciprocal crosses for all the characters except for anthesis-silking interval in normal condition of the reciprocal crosses. Estimate of components of variance for 13 characters revealed higher SCA variance than that of GCA and reciprocal crosses for all the characters. CML 411 was good general combiner for grain yield in both the conditions, whereas, CML 306 and CML 307 were good general combiners in heat stress condition, and CML 164, CML 304 and CML 305 were average general combiners in normal condition. On the basis of high yield, high SCA and at least high GCA of seed parent, the CML 411*CML 305 and CML 411*CML 307 were identified as promising hybrids for normal and heat stress conditions, respectively. Bangladesh J. Bot. 50(3): 659-669, 2021 (September)

Genetic Trend of Maize (Zea mays L.) under Normal and Water Stress Conditions

2005 ◽  
Vol 8 (4) ◽  
pp. 571-580 ◽  
Author(s):  
Muhammad Ijaz Tabass . ◽  
Muhammad Saleem .
Keyword(s):  
Zea Mays ◽  
Water Stress ◽  
Zea Mays L ◽  
Stress Conditions ◽  
Genetic Trend

Combining ability, heterosis and genetic diversity in tropical maize (Zea mays L.) under stress and non-stress conditions

Euphytica ◽  
2011 ◽  
Vol 180 (2) ◽  
pp. 143-162 ◽  
Author(s):  
Dan Makumbi ◽  
Javier F. Betrán ◽  
Marianne Bänziger ◽  
Jean-Marcel Ribaut
Keyword(s):  
Genetic Diversity ◽  
Zea Mays ◽  
Combining Ability ◽  
Zea Mays L ◽  
Stress Conditions ◽  
Tropical Maize

EFFECTS OF SEED SIZE ON GERMINATION OF CORN (ZEA MAYS) UNDER SIMULATED WATER STRESS CONDITIONS

1977 ◽  
Vol 57 (3) ◽  
pp. 921-923 ◽  
Author(s):  
S. C. MUCHENA ◽  
C. O. GROGAN
Keyword(s):  
Zea Mays ◽  
Water Stress ◽  
Seed Size ◽  
Zea Mays L ◽  
Stress Conditions ◽  
Small Seed

Three strains of corn (Zea mays L.), White Cloud popcorn cultivar, inbred R181, and inbred Ay499, were used to determine the importance of seed size on the ability of seeds to germinate under differing mannitol concentrations. Significant differences among seed size categories were obtained. The small seed size was best.

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