Combining ability among male sterile two-type and restorer lines of Zinnia elegans and implications for the breeding of this ornamental species

Lou, Xue; Lu, Tingting; Li, MaoJuan; Rui, Pang; Yao-mei, YE; Bao, Manzhu

doi:10.1016/j.scienta.2011.05.025

Cited by 3 publications

(4 citation statements)

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“…Male sterility represents a highly practicable system for the cost-effective production of hybrid seeds in flowering plants, and provides an efficient and economic means for the control of pollination (Daskalov and Mihailov 1988;Lou et al 2011). It was fortunate to obtain the male sterile mutant of T. patula from 1,796 heat shock induced cutting seedlings, and the mutant displayed a complete male sterile phenotype.…”

Section: Discussionmentioning

confidence: 99%

Characterization of a novel male sterile mutant of Tagetes patula induced by heat shock

et al. 2014

Euphytica

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Section: Discussionmentioning

confidence: 99%

Characterization of a novel male sterile mutant of Tagetes patula induced by heat shock

et al. 2014

Euphytica

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“…Estimation of combining ability is a tool that has been utilized in the design of successful breeding programs in several ornamental species (Rumpunen and Kviklys 2003;Zhang et al 2010;Lou et al 2010Lou et al , 2011Bayat et al 2012). This study of T. patula found that the mean squares due to SCA effects were significant for all of the traits evaluated; the mean squares due to the GCA effects of female parents were significant for PH, LCL, WCL, LS, DI, DC and NF traits, and the mean squares due to the GCA effects of male parents were significant for LP and DI traits.…”

Section: Combining Ability Analysis Of T Patulamentioning

confidence: 99%

“…); conversely, Namita et al (2011) demonstrated the dominance of non-additive gene action (SCA) in determining PH and plant spread in Tagetes spp. Lou et al (2011) concluded that these contradictory findings about the relative importance of GCA and SCA might be due to differences in the precise nature of the test materials, but advised that the underlying reasons required further study. Here, our study of the estimation of combining ability variance of 11 ornamental traits of T. patula has revealed that both GCA and SCA were important to the inheritance of plant morphology in T. patula.…”

Section: Analysis Of Genetic Components Of T Patulamentioning

confidence: 99%

“…Heterosis breeding describes the identification and selection of hybrids which have outstanding performance in a segregating generation, and it has been widely used in ornamental species to improve ornamental traits of F 1 generation plants (Rumpunen and Kviklys 2003;Zhang et al 2010;Lou et al 2010Lou et al , 2011Bayat et al 2012). There already exist several reports describing heterosis breeding in Tagetes spp.…”

Section: Introductionmentioning

confidence: 99%

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A study of heterosis, combining ability and heritability between two male sterile lines and ten inbred lines of Tagetes patula

Zhang

et al. 2014

Euphytica

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Two male sterile lines (Ms-1, Ms-2) and ten inbred lines (K3, K4, K5, K8, K13, K15, K17, K20, K30, K33) were crossed according to Comstock and Robinson's (in: Gowen (ed.) Heterosis, 1952) North Carolina Design II to estimate heterosis, combining ability, heritability and the phenotypic correlation coefficient for 11 ornamental characteristics of Tagetes patula. Twenty cross combinations and 12 parents were evaluated for 11 ornamental characteristics, in a randomized complete block design with three replications, in trials conducted during 2011 and 2012 at Huazhong Agricultural University, Wuhan, China. The results showed that the hybrid combinations displayed higher ornamental values and showed obvious heterosis over the male-parent for most of the ornamental traits evaluated. The male sterile line Ms-1 scored highly for general combining ability (GCA) with respect to the development of F 1 offspring with a dwarf and compact plant habit, abundant double petals, and extended period between the opening and wilting of individual inflorescences. The male sterile line Ms-2 scored highly for GCA with respect to the development of F 1 offspring with a large plant form and large flower size, as well as abundant flower numbers. The specific combining ability (SCA) of cross Ms-2 9 K20 was found to be high, with progeny showing high positive heterosis over the male parent and superior mean values for all ornamental traits, thereby indicating that this cross has the potential to function as a superior cultivar within commercial breeding programmes. Both GCA effects and SCA effects were found to be important for the performance of individual hybrid combinations, and no clear relationship between GCA and SCA was found for these T. patula lines. The ratio of r 2 GCA =r 2 SCA for individual characteristics revealed that the relative importance of GCA and SCA to progeny quality varied for different traits. Estimates of heritability showed that many of the quantitative ornamental traits of T. patula were highly heritable, and the traits of diameter of center disk and number of ray florets should readily be improved by selection. By contrast, environmental factors influenced markedly on the traits of plant height, crown size, number of days between opening and wilting of inflorescences and the maximum number of flowers present each day. Phenotypic correlation coefficient analysis showed that the various vegetative growth characteristics were closely related to one another and, more interestingly, significant phenotypic correlations were found between the growth of the vegetative and reproductive structures of T. patula.

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Assessment of combining ability for morphological traits in periwinkle (Catharanthus roseus (L.) G. Don) genotypes using diallel analysis

Singh

Dhatt

2021

The Journal of Horticultural Science and Biotechnology

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Combining ability among male sterile two-type and restorer lines of Zinnia elegans and implications for the breeding of this ornamental species

Cited by 3 publications

References 25 publications

Characterization of a novel male sterile mutant of Tagetes patula induced by heat shock

Characterization of a novel male sterile mutant of Tagetes patula induced by heat shock

A study of heterosis, combining ability and heritability between two male sterile lines and ten inbred lines of Tagetes patula

Assessment of combining ability for morphological traits in periwinkle (Catharanthus roseus (L.) G. Don) genotypes using diallel analysis

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