Genetic Diversity among Pentaploid Buffelgrass Accessions

Burson, Byron L.; Renganayaki, K.; Dowling, Charlie D.; Hinze, Lori L.; Jessup, Russell W.

doi:10.2135/cropsci2014.09.0655

Cited by 11 publications

(14 citation statements)

References 44 publications

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“…The highest internode length (24.08 cm) occurred in Nigerian accession NGB00537 (Table 2). To corroborate the present results, according to Hash et al (2003) and Burson et al (2015), gene actions and environmental influences have great effects on vegetative and yield performance of cereals. Furthermore, it has been demonstrated that particular genotypes perform best in particular environments because of favoured interactions (Mano and Takeda, 1995).…”

Section: Resultssupporting

confidence: 87%

Genetic divergence of Nigerian and Indian pearl millet accessions based on agronomical and morphological traits

et al. 2017

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The study assessed the genetic diversity of pearl millet accessions grown in Nigeria and India based on morpho-agronomic traits in order to identify genotypes with superior characters which could be utilized in breeding programmes. Twenty-four pearl millet accessions were grown and evaluated for agronomic and morphological traits during the dry and wet seasons of 2015-2016. Data collected on the accessions using standard descriptors were analysed statistically. IP22281 had the highest mean plant height (108.90 cm) while NGB00531 recorded the lowest (61.02 cm). Significant intra-specific variation existed in number of leaves per plant, leaf length, leaf width, number of nodes and internode length, however, stem girth was similar for the accessions. Tillering was generally poor with the highest value (1.60 tillers per plant) found in NGB00531. A significant positive correlation occurred between plant height, number of leaves, leaf length and leaf width. Panicles emerged between 44 and 56 days and NGB00548 had the shortest maturity time. Also, panicle length and peduncle diameter varied significantly for the accessions. The highest grain yield and 1000-grain weight were recorded in NGB00616 and the lowest yield and weight were recorded in IP22269. The principal component analysis grouped the accessions into four clusters, comprising mixtures of Nigerian and Indian members. Similarly, the dendrogram grouped the accessions into two main groups which were sub-divided into smaller clusters with accessions from Nigeria and India in the same cluster. The study concludes that variations in morpho-agronomic and yield characters among the accessions studied could be harnessed for crop improvement. The clustering pattern of these accessions indicated their genetic relatedness, possibly from the same progenitor, but separation by geographical or ecological isolation mechanisms.

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Section: Resultssupporting

confidence: 87%

Genetic divergence of Nigerian and Indian pearl millet accessions based on agronomical and morphological traits

et al. 2017

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“…These grasses are widely established and continue to be sown following brush clearing, particularly in Texas and Mexico (Arriaga et al 2004, Lyons et al 2013. The geographic range of buffelgrass is limited because the grass lacks cold tolerance (Burson et al 2015), but its range may expand in the future with predicted changes in climate (Archer and Predick 2008).…”

Section: Discussionmentioning

confidence: 99%

Non‐native grasses reduce scaled quail habitat

et al. 2019

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Non‐native grasses are frequently sown in the southwestern United States for livestock forage and erosion control. These grasses often spread from areas where they are planted and replace native grasses and forbs. We tested the hypothesis that chestnut‐bellied scaled quail (Callipepla squamata castanogastris) avoid locations dominated by non‐native grasses. We trapped scaled quail at 5 different sites in southern Texas, USA, and located quail fitted with necklace‐style transmitters 3 times/week during 2013–2014. We manually delineated plant communities using aerial maps and on‐the‐ground knowledge of the study sites. We examined second‐order (home‐range scale) selection by comparing proportion of the areas of plant communities within 62 scaled quail home ranges (used) paired with random home ranges (available). We examined third‐order (within‐home‐range scale) selection by comparing the composition of bird location (used) and random (available) points based on proportion of points within plant communities. For both home‐range scale and within‐home‐range scale analyses, we used non‐parametric multivariate analysis of variance with 9,999 random permutations. We examined fourth‐order (organism‐centered) selection by measuring vegetation variables at used and available locations and then estimating the relative probability of use of vegetation variables and by estimating continuous selection functions for variables that were influential in determining relative probability of use. Buffelgrass (Pennisetum ciliare) and Old World bluestems (Bothriochloa spp., Dichanthium annulatum and other Dichanthium spp.) comprised 99% (95% CI = 98–100%, n = 143 sites where non‐native plants occurred) of the non‐native grasses in our study areas. Scaled quail avoided non‐native and riparian plant communities at the home‐range and within‐home‐range scales of selection. At the organism‐centered scale of selection, odds of use by scaled quail decreased 28% for every 10% increase in non‐native grass cover and increased 12% for every 10% increase in shrub canopy cover. Scaled quail avoided locations with >10% canopy cover of non‐native grasses. Based on avoidance at 3 scales of selection, dominance of buffelgrass and Old World bluestems degrades habitat for scaled quail. Spread and sowing of non‐native grasses and brush clearing may be partly responsible for declines in scaled quail populations. © 2019 The Wildlife Society.

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“…Actualmente, es la especie más utilizada en la rehabilitación y conservación de suelo en pastizales de zonas áridas y semiáridas (2) señalándose inclusive, que es la especie clave para el desarrollo de la ganadería del norte y centro de México (3,10,11) . El pasto buffel es quizá, una de las especies más estudiadas en los últimos años; los reportes incluyen diferentes tópicos, desde estudios genéticos (12,13) , fisiológicos (14,15) , ecológicos (9,16) , de establecimiento, adaptación distribución (3,17) , valor nutricional (18) y productividad (3,8) . Actualmente se cuenta con líneas experimentales e híbridos que se han desarrollado en México (18,19,20) y se han utilizado variedades registradas en el extranjero (3,21,22) , pero que no han sido registradas en el país, ante el Servicio Nacional de Inspección y Certificación de Semillas (SNICS), órgano oficial de la SAGARPA en México para el registro de nuevas variedades.…”

Section: Origenunclassified