Combining Cytoplasmic Male Sterility and Xenia Increases Grain Yield of Maize Hybrids

Crop Science ◽  
2002 ◽  
Vol 42 (6) ◽  
pp. 1848-1856 ◽  
Author(s):  
Urs Weingartner ◽  
Olivier Kaeser ◽  
Muhua Long ◽  
Peter Stamp
Keyword(s):  
Grain Yield ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Maize Hybrids

scholarly journals The plus-hybrid effect on the grain yield of two ZP maize hybrids

Genetika ◽  
2010 ◽  
Vol 42 (3) ◽  
pp. 475-484
Author(s):  
Sofija Bozinovic ◽  
Jelena Vancetovic ◽  
Milosav Babic ◽  
Milomir Filipovic ◽  
Nenad Delic
Keyword(s):  
Grain Yield ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Statistical Significance ◽  
Combined Effect ◽  
Hybrid Effect ◽  
Maize Hybrid ◽  
Maize Hybrids ◽  
Female Component

The combined effect of cytoplasmic male sterility and xenia on maize hybrid traits is referred to as the plus-hybrid effect. Two studied ZP hybrids differently responded to this effect for grain yield. All plus-hybrid combinations of the firstly observed hybrid had a higher yield than their fertile counterparts, but not significantly, while only one combination of the second hybrid positively responded, also without statistical significance. It seems that the observed effect mostly depended on the genotype of the female component.

scholarly journals Individual and combined (Plus-hybrid) effect of cytoplasmic male sterility and xenia on maize grain yield

2015 ◽  
Vol 75 (2) ◽  
pp. 160-167 ◽  
Author(s):  
Sofija Bozinovic ◽  
Slaven Prodanovic ◽  
Jelena Vancetovic ◽  
Ana Nikolic ◽  
Danijela Ristic ◽  
...  
Keyword(s):  
Grain Yield ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Hybrid Effect ◽  
Maize Grain Yield ◽  
Maize Grain

The effect of genotype × cytoplasm interaction on meiotic behaviour of maize chromosomes

Genome ◽  
1992 ◽  
Vol 35 (4) ◽  
pp. 653-658 ◽  
Author(s):  
M. M. Kruleva ◽  
A. B. Korol ◽  
T. G. Dankov ◽  
V. G. Skorpan ◽  
I. A. Preygel
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Relative Stability ◽  
Chiasma Frequency ◽  
Chiasma Formation ◽  
Meiotic Behaviour ◽  
Male Sterile ◽  
Maize Hybrids ◽  
Male Sterile Cytoplasm ◽  
Cytoplasmic Sterility

The effect of four isogenic cytoplasmic types, normal, Salvador, Texas, and Charrua (the latter three causing male sterility), on the process of chiasma formation has been studied using two different maize hybrids. The cytoplasmic male sterility determinants have been shown to reduce the rate of interstitial exchanges per nucleus and per bivalent and the frequency of univalents. Increased variation between plants and relative stability of the intercellular variation within a plant have been observed for the parameters studied. It is concluded that the determinants of cytoplasmic sterility lower the probability of additional exchanges (relative to the obligate one) and reduce the frequency of premature disruption of one-exchange chromosome associations.Key words: maize, chiasma frequency, male sterile cytoplasm, univalent formation, genotype × cytoplasm interaction.

scholarly journals Effect of isonuclear-alloplasmic cytoplasmic male sterility system on grain yield traits in pearl millet

2019 ◽  
Vol 79 (01S) ◽  
Author(s):  
Mahesh Pujar ◽  
M Govindaraj ◽  
S. Gangaprasad ◽  
A. Kanatti
Keyword(s):  
Grain Yield ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Pearl Millet ◽  
Yield Traits ◽  
Component Traits ◽  
Potential Alternative ◽  
Per Se ◽  
1000 Grain Weight ◽  
Plot Design

Pearl millet is a nutri-cereal and is grown predominantly by subsistence farmers in semi-arid regions of India and Africa. Considering it’s highly cross pollinated nature and availability of cytoplasmic male sterility (CMS), hybrids have become a dominant cultivar type in India. Present study aims to assess the effect of isonuclear alloplasmic A1, A4 and A5 CMS on agronomic performance of pearl millet hybrids. Five isogenic females each having 3 alloplasmic (A1, A4 and A5) cytoplasm were crossed with 6 male-parents to generate 120 hybrids. All these were evaluated in two contrasting seasons (E) in split-split-plot design. The significant cytoplasm per se and restorer per se indicate the both contribution to most of the traits, however, greater magnitude of contribution arises from restorers significantly (75%grain yield; 95% 1000-grain weight). The significant, hybrids x E shows the mandatory of multilocation testing for yield traits while non-significant of CMS × E interaction reveals the greater stability of CMS. Further, non-significant mean yield differences exhibited in A1, A4 and A5 hybrids (2.84-3.14 t ha–1) indicated no adverse effect of cytoplasm on grain yield and associated traits. Also, diverse genetic backgrounds used in this study displayed significant contributions to grain yield and its component traits. These results imply the prospects for utilization of potential alternative cytoplasm (A4 and A5) to widen the cytoplasm base together with development of counterpart restorers to produce future high-yielding hybrids.

scholarly journals Influence of cytoplasmic genetic male sterility in the grain yield of maize hybrids

2018 ◽  
Vol 13 (45) ◽  
pp. 2610-2617 ◽  
Author(s):  
Augusto Rodrigues Luiz ◽  
Garcia Von Pinho Renzo ◽  
Antonio Yanes Bernardo Junior Luiz ◽  
Fillipe de Souza Vander ◽  
de Cassia Pereira Francielly ◽  
...  
Keyword(s):  
Grain Yield ◽  
Male Sterility ◽  
Maize Hybrids ◽  
Genetic Male Sterility

scholarly journals Heterosis and Combining Ability For Floral and Yield Characters in Rice Using Cytoplasmic Male Sterility System

2021 ◽  
Author(s):  
Essam A. Z. ElShamey ◽  
Raghda M. Sakran ◽  
Mahmoud A. A. ElSayed ◽  
Mahmoud E. Selim ◽  
Mousa O. Germoush ◽  
...  
Keyword(s):  
Grain Yield ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Floral Traits ◽  
Hybrid Seed Production ◽  
Gene Effects ◽  
Environmental Pressures ◽  
Anther Length ◽  
Cms Line ◽  
Stigma Exsertion

Abstract Developing high-yielding rice genotypes has become more urgent to ensure global food security with continuing population growth and the threat of environmental pressures. Cytoplasmic male sterility (CMS) system provides a valuable approach for commercial exploitation of heterosis and producing high-yielding and quality hybrid rice. Three CMS lines and ten diverse restorers were crossed using line × tester mating design. The obtained thirty F1 hybrids and their thirteen parents were evaluated. Yield traits as well as certain floral traits characters that influence the efficiency of crossing and hybrid seed production as duration of floret opening (min), stigma exsertion (mm), stigma length (mm), opening floret angle, and anther length (mm) were assessed. Highly significant variations were detected among parents, crosses, and parents vs. crosses for all the studied traits. The CMS line L2 and the restorer T5 were identified as good combiners for stigma exsertion, stigma length, opining floret angle, and duration of floret opening. Moreover, the hybrids L1×T1, L1×T3, L2×T2, L2×T5, L3×T4, L3×T5, and L3×T9 had positive SCA effects for most floral traits. Besides, the CMS lines L1 and L3 as well as the restorers T1, T2, T3, T6, and T9 proved to be the best general combiners for grain yield and certain contributing traits. The hybrids L1×T1, L1×T5, L1×T7, L2×T3, L2×T4, L2×T5, L2×T10, L3×T1, L3×T2, and L3×T6 displayed positive SCA effects for grain yield and one or more of its attributes. Both additive and non-additive gene effects are involved in the governing inheritance of all evaluated traits. The biochemical variations among the certain evaluated genotypes were further studied. The esterase and peroxidase isozymes were applied for verifying the genetic diversity at the protein level among the used CMS lines, restorers, and their crosses. All the applied isozymes displayed polymorphism for the parents and their crosses. The banding pattern and intensity differences provided accurate results on the reliable variability among the tested genotypes.

CYTOPLASMIC MALE STERILITY. RESTORING GENES IN CORN

2020 ◽  
Vol 4 ◽  
pp. 40-48
Author(s):  
K.R. KANUKOVA ◽  
◽  
Z.I. BOGOTOVA ◽  
I.Kh. GAZAEV ◽  
S.P. APPAEV ◽  
...  
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility
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