Competition with trees does not influence root characteristics of perennial grasses in semi-arid and arid savannas in South Africa

Priyadarshini, K.V.R.; Bie, S. de; Heitkönig, Ignas M. A.; Woodborne, Stephan; Gort, Gerrit; Kirkman, Kevin; Prins, Herbert H. T.

doi:10.1016/j.jaridenv.2015.09.006

Cited by 8 publications

(2 citation statements)

References 54 publications

(88 reference statements)

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“…Progenies presented greater biomass accumulation in the second harvest, not only because greater root development as indicated earlier, but also because the first harvest might have stimulated the regrowth, developing new cladodes and in greater quantity. On the other hand, Priyadarshini et al (2016) reported that the removal of the aerial part of a plant reduces the content of reserve carbohydrates, root growth, and leaf area, and therefore, the growth of forage is compromised, especially in dry periods, when they use reserve substances, which are allocated in the stems and leaves.…”

Section: Discussionmentioning

confidence: 99%

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Agronomic characteristics and nutritional value of cactus pear progenies

et al. 2021

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Cactus is an important fodder in tropical semiarid, but recent insect pressure has devastated cactus crops. Breeding programs are developing cactus varieties resistant to cochineal scale (Dactylopius opuntiae Cockerell). The cactus V‐19 (Opuntia larreyi F.A.C. Weber ex J. M. Coult.) has demonstrated resistance to cochineal scale, however, no breeding effort has been attempted with this species. This study characterized the resistance of cactus V‐19 progenies to cochineal scale. Morphological, productive, and nutritive value variables were evaluated in 11 genotypes of cactus V‐19, in which 10 (named as P1, P2, P3, P4, P5, P6, P7, P8, P9, and P10) were progenies resulted from open pollination. Two evaluations were carried out from 2015 to 2017, corresponding to first and second harvest years. A randomized complete design with seven replications were used. There was a harvest (year) × progeny interaction (p < .05) across the estimated parameters. In 2017, there was a stronger correlation between morphological traits and productive responses because cactus had faster growth and greater number of cladodes, while in 2015 progenies had greater nutritive value. Progeny P1 improved performance compared with the progenitor and other progenies regarding dry matter (DM) accumulation, in vitro digestible DM, and crude protein with 13.7 Mg DM ha–1 year–1, 848 g kg–1, and 47 g kg–1, respectively. The principal component analysis (PCA) and dendrogram obtained by hierarchical clustering method confirmed that progeny P1 outperformed the other progenies, including the mother plant V‐19. These progenies must be further evaluated to assess their productive responses under different management practices.

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Section: Discussionmentioning

confidence: 99%

“…On the other hand, Priyadarshini et al. (2016) reported that the removal of the aerial part of a plant reduces the content of reserve carbohydrates, root growth, and leaf area, and therefore, the growth of forage is compromised, especially in dry periods, when they use reserve substances, which are allocated in the stems and leaves.…”

Section: Discussionmentioning

confidence: 99%