scholarly journals Inheritance of Yield Related Traits in a Half Diallel Crosses of Some Maize (Zea mays L.) Genotypes

2020 ◽  
Vol 18 (1) ◽  
pp. 18-25
Author(s):  
FMA Haydar
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Combining Ability ◽  
Zea Mays L ◽  
General Combining Ability ◽  
Gene Effect ◽  
Maize Populations ◽  
Diallel Crossing ◽  
Parental Lines ◽  
Half Diallel

Inheritance of grain yield, heterosis and combining ability were investigated in maize populations obtained from half-diallel crossing among six inbred parental lines. General (GCA) and specific (SCA) combining ability effects were significantly different among parental lines. The grain yield was under the partial gene effect. The parents P1, P3 and P5were considered suitable according to their yield contributing attributes couple with general combining ability effects. The midparentheterosis values ranged from -27.246 (P2 xP5) to 15.209% (P1 xP2) whereas the better parent heterosis values varied between 22.375(P2x P3) to 40.363% (P2 x P5) only seven crosses had higher grain yields. Of those crosses, P1×P2, P2×P5 and P1×P3 were considered most promising hybrids yielding heterosis as 15.880%, 20.363% and 40.363 respectively over their parents. The Agriculturists 2020; 18(1) 18-25

scholarly journals Evaluation of inbred lines of maize (Zea mays L.) through line × tester method

2015 ◽  
Vol 39 (4) ◽  
pp. 675-683
Author(s):  
MN Amin ◽  
M Amiruzzaman ◽  
A Ahmed ◽  
MR Ali
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Combining Ability ◽  
Zea Mays L ◽  
Gene Action ◽  
Inbred Lines ◽  
General Combining Ability ◽  
Genotypic Differences ◽  
Mean Values ◽  
Wide Range

Maize inbred lines were evaluated by using line × tester method involving 11 lines and 3 testers for grain yield and its components through estimation of general combining ability (gca) and specific combining ability (sca) effects. Highly significant genotypic differences were observed indicated wide range of variability present among the genotypes. The crosses with high sca effect for grain yield were evolved from high × low general combiner parents which reveled additive × dominance type of gene action. The cross combinations 9MS4-1 × L22, 9MS4-1 × L486, 9MS4-2 × L431, 9MS4-11 × L486 and 9MS4- 15 × L431 with high positive sca effect having high mean values might be used for obtaining high yielding hybrids. The information on the nature of gene action with respective variety and characters might be used depending on the breeding objectives. DOI: http://dx.doi.org/10.3329/bjar.v39i4.22547 Bangladesh J. Agril. Res. 39(4): 675-683, December 2014

scholarly journals Investigation on genetic control for yield and yield contributing traits in advanced generation of maize (Zea mays L.)

2018 ◽  
Vol 42 (4) ◽  
pp. 715-724
Author(s):  
S Begum ◽  
M Amiruzzaman ◽  
A Ahmed ◽  
SH Omy ◽  
MM Rohman
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Plant Breeding ◽  
Combining Ability ◽  
Zea Mays L ◽  
General Combining Ability ◽  
Yield Data ◽  
Early Variety ◽  
Ear Height ◽  
Advanced Generation

Twenty five cross progeny of maize developed by Plant Breeding Division of BARI were evaluated by determining general combining ability (GCA) and specific combining ability (SCA) effects following line × tester design involving five female lines and five testers for grain yield and other yield contributing traits. Highly significant genotypic variances specified inclusive inconsistency existed among the genotypes. None of the lines showed significant GCA effects for all the characters, but the line Pac-60/S4-3 and Pac-60/S4-9 showed negative GCA effect for days to 50% tasseling and silking which is desirable to develop early variety. Additionally, the line Pac-60/S4-9, Pac-60/S4-18 and Pac-60/S4-21 showed negative GCA effect for plant and ear height which is also desirable to develop dwarf variety. Nevertheless, none of the cross showed significant SCA effect for any character studied, but crosses Pac-60/S4-21×BIL-113, Pac-60/S4-21×Utn/S4-15, Pac-60/S4-18×Utn/S4-8, Pac-60/S4-3×BIL-113, Pac-60/S4-3×Utn/S4-18, Pac-60/S4-9×Utn/S4-15, Pac-60/S4-9×BIL-113 and Pac-60/S4-21×Utn/S4-10 had higher yield with positive SCA effects. However, considering yield data along with lodging percentage, five crosses namely Pac-60/S4-21×BIL-113, Pac-60/S4-21×Utn/S4-15, Pac-60/S4-21×Utn/S4-10 Pac-60/S4-9×Utn/S4-15 and Pac-60/S4-3×BIL-113 showed better performance.Bangladesh J. Agril. Res. 42(4): 715-724, December 2017

scholarly journals TOPCROSS ANALYSIS AND COMBINING ABILITY FOR GRAIN YIELD AND OTHER ATTRIBUTES IN MAIZE (Zea mays L.)

2010 ◽  
Vol 1 (5) ◽  
pp. 673-688
Author(s):  
M. Abd El-Azeem ◽  
A. Abd El Aal ◽  
A. El-Galfy
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Combining Ability ◽  
Zea Mays L

scholarly journals Inheritance and combining ability study on drought tolerance and grain yield among early maturing inbred lines of maize (Zea mays L.)

2018 ◽  
Vol 10 (6) ◽  
pp. 115-127 ◽  
Author(s):  
Z. M. M. Issa ◽  
D. Nyadanu ◽  
A. Richard ◽  
A. R. Sangare ◽  
I. I. Adejumobi ◽  
...  
Keyword(s):  
Zea Mays ◽  
Drought Tolerance ◽  
Grain Yield ◽  
Combining Ability ◽  
Zea Mays L ◽  
Inbred Lines ◽  
Early Maturing

scholarly journals Grain Fe and Zn content, heterosis, combining ability and its association with grain yield in irrigated and aerobic rice

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
G. Anusha ◽  
D. Sanjeeva Rao ◽  
V. Jaldhani ◽  
P. Beulah ◽  
C. N. Neeraja ◽  
...  
Keyword(s):  
Grain Yield ◽  
Combining Ability ◽  
Gene Action ◽  
General Combining Ability ◽  
Aerobic Conditions ◽  
Zn Content ◽  
Allelic Gene ◽  
Parental Lines ◽  
Growing Conditions

AbstractGenetic improvement of rice for grain micronutrients, viz., iron (Fe) and zinc (Zn) content is one of the important breeding objectives, in addition to yield improvement under the irrigated and aerobic ecosystems. In view of developing genetic resources for aerobic conditions, line (L) × tester (T) analysis was conducted with four restorers, four CMS lines and 16 hybrids. Both hybrids and parental lines were evaluated in irrigated and aerobic field conditions for grain yield, grain Fe and Zn content. General Combining Ability (GCA) effects of parents and Specific Combining Ability (SCA) effects of hybrids were observed to be contrasting for the micronutrient content in both the growing environments. The grain Fe and Zn content for parental lines were negatively correlated with grain yield in both the contrasting growing conditions. However, hybrids exhibited positive correlation for grain Fe and Zn with grain yield under limited water conditions. The magnitude of SCA mean squares was much higher than GCA mean squares implying preponderance of dominance gene action and also role of complementary non-allelic gene(s) interaction of parents and suitability of hybrids to the aerobic system. The testers HHZ12-SAL8-Y1-SAL1 (T1) and HHZ17-Y16-Y3-Y2 (T2) were identified as good combiners for grain Zn content under irrigated and aerobic conditions respectively.

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