In vitro chemical mutagenesis improves the turf quality of bahiagrass

Kannan, Baskaran; Olivas, Nelson H. Davila; Lomba, Paula; Altpeter, Fredy

doi:10.1007/s11240-014-0621-2

Cited by 11 publications

(22 citation statements)

References 29 publications

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“…The Argentine mutant (Arg‐M‐19) reported by Kannan et al. () also exhibited dark green colour during warm months (Fig. b); however, it produced numerous tall inflorescences from May to October (Fig.…”

Section: Discussionmentioning

confidence: 79%

“…Among the Argentine mutants, Arg‐M‐19 (referred as M36 in Kannan et al. ) exhibited dark green colour (Fig. b), and while not in the top ten, it also had reduced inflorescence density compared to ‘Argentine’ (Fig.…”

Section: Resultsmentioning

confidence: 98%

“…, Kannan et al. ). Mutagenesis has been applied in bahiagrass without much success by Burton ( and) Burton (), whereas Kannan et al.…”

Section: Discussionmentioning

confidence: 99%

“…) and exposure of cells to sodium azide in tissue culture (Kannan et al. ). These plants were grown in the field for two years and selection for reduced flowering, darker green colour and improved turf quality resulted in advancement of 40 ‘turf‐type’ mutants.…”

Section: Methodsmentioning

confidence: 99%

“…In bahiagrass, Burton ( and) Burton () did not identify novel morphological traits, whereas Kannan et al. () reported an Argentine‐mutant plant with improved turf traits. Despite limited success at identifying useful mutants, improvements in leaf texture, colour, plant height, flowering behaviour and seed production are warranted for the adoption of bahiagrass for use in higher‐value landscapes.…”

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confidence: 99%

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Breeding apomictic bahiagrass (Paspalum notatum Flügge) with improved turf traits

et al. 2017

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The development of a turf‐type bahiagrass could have a remarkable impact on the billion‐dollar turf industry in the south‐eastern United States. The goals of this study were to (i) select bahiagrass genotypes with improved turf attributes and (ii) determine the reproductive mode and seed fertility of selected genotypes. The population included mutants, wild types, hybrids and standard cultivars evaluated at two locations for two years. Morphological variation was observed and clonal repeatability (H2) ranged from 0.27 to 0.90. Flowering was extremely reduced in some mutants, which also exhibited dark green colour, finer texture and reduced canopy height. Cytoembryological observations revealed that diploids reproduced sexually and tetraploids by obligate or facultative apomixis. Genotypes with superior seed fertility were identified, while others were comparable to the standard cultivars. While mutant plants exhibited great morphological variation, the random mutations did not affect their reproductive mode, validating the use of mutagenesis in apomictic species. The high H2 indicated that selection for improved turf attributes could be successfully performed with the advantage of clonal seed propagation.

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Section: Discussionmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 98%

“…, Kannan et al. ). Mutagenesis has been applied in bahiagrass without much success by Burton ( and) Burton (), whereas Kannan et al.…”

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Breeding apomictic bahiagrass (Paspalum notatum Flügge) with improved turf traits

et al. 2017

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Early‐stage evaluation of grazed tetraploid bahiagrass experimental entries

et al. 2023

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Bahiagrass (Paspalum notatum Flüggé) cultivars used for forage in the southeastern United States are primarily diploids. Although producers favor tetraploid traits, for example, wider leaf blades and fewer inflorescences, compared to diploids, there are barriers to their greater use, including apomictic reproduction, lesser frost tolerance, and later initiation of spring growth. By overcoming the apomixis barrier, viable tetraploid options are now available. This study compared annual and seasonal forage accumulation (FA), persistence, and nutritive value of nine tetraploid experimental entries and ‘Argentine’ under ‘moderate’ (10‐cm stubble, 4‐week grazing interval) and ‘intensive’ grazing (5‐cm stubble, 2‐week grazing intervals) during 2020 and 2021. More upright‐growing entries, such as Hybrids 3 and 93, had greater annual FA than Argentine (8230 and 9160 vs. 6060 kg DM (ha year)−1). Similarly, Hybrids 3 and 93 were 50% more productive in early and late season than most entries. Decumbent entries had 30% greater FA under intensive than moderate grazing, whereas upright types generally had similar FA for both grazing managements. Most entries had comparable digestibility and crude protein as Argentine (∼503 and 124 g kg−1, respectively), and intensive grazing resulted in greater nutritive value than moderate grazing, regardless of entry. All entries maintained high ground cover across grazing treatments (88%–96%). The most striking difference was the superior annual FA and the seasonal distribution of FA for Hybrids 3 and 93 compared with other entries, particularly during spring and fall. This occurred without compromising persistence or nutritive value. Five entries showed superior traits compared to Argentine and should be selected for further evaluation under greater spatial and temporal scales prior to cultivar release.

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Management of Chimera and In Vitro Mutagenesis

Datta

2023

Induced Mutation Breeding

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In vitro chemical mutagenesis improves the turf quality of bahiagrass

Cited by 11 publications

References 29 publications

Breeding apomictic bahiagrass (Paspalum notatum Flügge) with improved turf traits

Breeding apomictic bahiagrass (Paspalum notatum Flügge) with improved turf traits

Early‐stage evaluation of grazed tetraploid bahiagrass experimental entries

Management of Chimera and In Vitro Mutagenesis

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