Combining ability through line × tester analysis for phenological, seed yield, and oil traits in sunflower (Helianthus annuus L.)

Memon, Shabana; Baloch, M. J.; Baloch, G. M.; Jatoi, Wajid Ali

doi:10.1007/s10681-015-1368-5

Cited by 25 publications

(32 citation statements)

References 9 publications

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“…The female lines CMS-234A from cultivated source and CMS-XA, ARG-2A and PRUN-29A from the wild relative source were identified as good combiners for oil content. Among tester lines assessed, line RCR-8297 for seed yield under both environments and lines RCR-8297 and P69R for oil content in the stress growth regime with high positive GCA estimates are desirable parents to be used for developing sunflower hybrids with improved oil content [54,58,59].…”

Section: Discussionmentioning

confidence: 99%

Characterization for Drought Tolerance and Physiological Efficiency in Novel Cytoplasmic Male Sterile Sources of Sunflower (Helianthus annuus L.)

et al. 2018

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Sunflower is sensitive to drought, and furthermore, sunflower hybrids display limited cytoplasmic diversity. In addition, the wild cytoplasmic sources of sunflower are not well explored for their potential to introduce drought tolerance into newly developed hybrids. Therefore here, we carried out a Line × Tester-based genetic study using 19 sunflower genotypes representing, 13 cytoplasmic male sterile (CMS) lines from wild and conventional sources, 2 maintainer lines, and 4 restorer lines. The CMS and maintainer lines were crossed with restorer lines to develop sixty F1 hybrids. The parents and their hybrids were evaluated under two water regimes, normal irrigation and drought stress (i.e., withholding water). A total of twelve important plant descriptors were studied over a period of two years and the significant differences between parents and hybrids are reported here. More specifically, hybrid lines were higher in average values for all the descriptors. The contribution of female parent was more prominent in the expression of traits in hybrids as compared to male parents. The CMS sources varied significantly regarding seed yield per plant and other physiological traits. Proline content in the leaves of all the genotypes was three times higher in the water stress regime. Accession CMS-PKU-2A was identified as the best general combiner for leaf area and specific leaf weight., whereas CMS-234A was the best general combiner for biological yield and photosynthetic efficiency under both conditions. The cross combinations CMS-ARG-2A × RCR-8297, CMS-234A × P124R, and CMS-38A × P124R were found significant for biological yield, seed yield and oil content under both environments. Overall, this study provides useful information about the cytoplasmic effects on important sunflower traits and drought stress tolerance.

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Section: Discussionmentioning

confidence: 99%

Characterization for Drought Tolerance and Physiological Efficiency in Novel Cytoplasmic Male Sterile Sources of Sunflower (Helianthus annuus L.)

et al. 2018

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“…It is obvious that the important aspiration of plant breeders is to know the extent of relationship between phenological, seed yield and oil traits, which will ultimately enhance their selection efficiency for above traits. Thus, it is very essential to size the mutual associations between various plant characters so as to define the component traits which may be capitalized as reliable selection criteria for genetic improvements of yield and other important traits [5]. Correlation studies also help to improve different characters simultaneously [6].…”

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confidence: 99%

Phenotypic correlation and heritability analysis in sunflower (Helianthus annuus L.) germplasm

Baloch¹

2016

PAB

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The current experiment was carried out to evaluate the advance sunflower (Helianthus annuus L.) genotypes for genetic parameters including phenotypic correlation and heritability. In this context, a total of 18 sunflower genotypes were grown in a randomized complete block design with four replications at experimental filed of Oilseeds Section, ARI, Tandojam during the growing season, 2015. The mean squares were differed significantly (P≤0.01) for all the studied traits among the tested genotypes, designating that used materials has worth to be evaluated for further experiments. The correlation results depicted that traits, such as, plant height, head diameter, seeds head -1 and seed index established positive and significant correlations with seed yield plant -1 , demonstrating that genotypes having higher extent of these traits may be preferred in selection for evolving high yielding sunflower genotypes. High heritability estimates (broad sense) were detected for all the studied traits except head diameter, which expressed moderate heritability, representing that the variations witnessed was generally under the control of genetical factors than that of environmental factors; therefore, these characters may be improved directly on the basis of phenotypic selection

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“…The female lines CMS-234A from cultivated source and CMS-XA, ARG-2A and PRUN-29A from the wild source appeared as good combiners for oil content. Among testers RCR-8297 for seed yield under both the environments while RCR-8297 and P69R for oil content under stress environment with high positive GCA estimates are desirable parents to be used for developing sunflower hybrids with improved oil content [52, 56,57].…”

Section: Discussionmentioning

confidence: 99%

Characterization for Drought Tolerance and Physiological Efficiency in Novel Cytoplasmic Male Sterile Sources of Sunflower (Helianthus annuus L.)

Tyagi

Kaur

Kaushik³

et al. 2018

Preprint

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Sunflower is sensitive to drought and its hybrids have a limited cytoplasmic diversity. The wild 10 cytoplasmic sources of sunflower are not well exploited to their potential for drought tolerance and hybrid 11 development. In this respect, we carried out a Line × Tester based genetic study using 19 sunflower 12 genotypes representing, 13 cytoplasmic male sterile (CMS) lines from wild and conventional sources, 2 13 maintainer lines, and 4 restorer lines. The CMS and maintainer lines were crossed with restorer lines to 14 develop sixty one-way F1 hybrids. The parents and their hybrids were evaluated under two water 15 regimes viz., normal irrigated and water stress. A total of twelve important plant descriptors were studied 16 over a period of two years. The significant differences were observed between parents and hybrids in both 17 water regimes. Hybrids were higher in average values for all the descriptors than parents. The role of 18 female parent was more prominent in the expression of traits in hybrids as compared to male parents. The 19CMS sources varied significantly regarding seed yield per plant and other physiological traits. Proline 20 content was three times higher in parents and their hybrids under water stress, and it was not correlated 21 with any other descriptor. Accession CMS-PKU-2A was identified as the best general combiner for leaf 22 area and specific leaf weight. Whereas, CMS-234A was the best general combiner for biological yield and 23 photosynthetic efficiency under both the conditions. The cross combinations CMS-ARG-2A × RCR-8297, 24 CMS-234A × P124R, and CMS-38A × P124R were found significant for biological yield, seed yield and oil 25 content under both environments. Overall, this study provides useful information about the cytoplasmic 26 effects on important sunflower traits and drought stress tolerance when used in the different 27 combinations. 28 29 30 1. Introduction 31 Sunflower (Helianthus annuus L.) is a commercially important oilseed crop, and its oil is 32 comparable to virgin oil olive for health promoting benefits [1,2]. Botanically, sunflower is a cross-pollinated 33 and self-incompatible plant [3]. Moreover, it out crosses freely with its wild relatives [4]. During the past few 34 decades, the area and production of sunflower have increased because of its day length neutrality, a wider 35 adaptability, and responsiveness to added inputs [5]. Similarly, these attributes of sunflower promote 36 sustainable crop production system when sunflower is used with other crops in crop rotation [6]. The central 37 component of sunflower breeding is the development of hybrids through cytoplasmic male sterility (CMS) 38 system [7]. CMS is the absence of fertile pollen in the plant hence eliminates the need for manual 39 emasculation for the development of a successful cross combination. CMS based hybrids system has been 40 extensively distributed throughout the plant kingdom and well exploited for achieving yield targets, disease 41 resistance, and drought tolerance [8-10]. 42CMS syst...

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Combining ability through line × tester analysis for phenological, seed yield, and oil traits in sunflower (Helianthus annuus L.)

Cited by 25 publications

References 9 publications

Characterization for Drought Tolerance and Physiological Efficiency in Novel Cytoplasmic Male Sterile Sources of Sunflower (Helianthus annuus L.)

Characterization for Drought Tolerance and Physiological Efficiency in Novel Cytoplasmic Male Sterile Sources of Sunflower (Helianthus annuus L.)

Phenotypic correlation and heritability analysis in sunflower (Helianthus annuus L.) germplasm

Characterization for Drought Tolerance and Physiological Efficiency in Novel Cytoplasmic Male Sterile Sources of Sunflower (Helianthus annuus L.)

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