Physiological and Morphological Characterization of Basalt Milkvetch (Astragalus filipes): Basis for Plant Improvement

Bhattarai, Kishor; Johnson, Douglas A.; Jones, Thomas A.; Connors, Kevin J.; Gardner, Dale R.

doi:10.2111/08-011.1

Cited by 21 publications

(12 citation statements)

References 32 publications

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“…In the study of Bhattarai et al (2008) on Astragalus filipes, the first principal component described 60.5% of the total variation among accessions, whereas the second principal component described an additional 15.4% of the total variation. The PC1 loadings were high for biomass (0.94), seed yield (0.87), combined plant height and vigor score (0.80), and combined number of stems and inflorescences (0.93), and low for crude protein (20.67) and over winter mortality (20.63).…”

Section: Resultsmentioning

confidence: 99%

Finding out Relationships Among Some Morpho-Biochemical Parameters of Christ's Thorn (Ziziphus spina-christi) under Drought and Salinity Stresses

Nejat

Sadeghi

2016

Planta daninha

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-Taking into consideration that modeling and indicating relationship among traits and variables are among the most useful numerical techniques in the biological and botanical researches, and also undeniable impact of drought and salinity stresses, this research was implemented with the aim to consider change in relationship among the traits under separately drought and salinity stresses related to scarcely distributed medicinal plant called Christ thorn (Ziziphus spina-christi). A glass house experiment was implemented in controlled conditions at the College of Agriculture, Shiraz University, Shiraz, Iran. Five different water stress levels (irrigation at four, six, eight and 10 days intervals, compared to the unstressed control plants with every even days irrigation) and five salinity stress levels (0, 3.2, 6.4, 9.6 and 12.3 dS m -1 ) were separately induced on plants. Results of this study indicated that salinity and water stresses in addition to their destructive impact on cell and tissue compartment, can adverse and change the relationship among morphological and biochemical parameters in different ways. Cluster analysis could clearly separate traits into two groups under water stress while three groups under salinity stress. Principal component showed that this technique can accounted for a high variation among data under both water and salinity stresses so that it is possible to consider relationship among the traits using principal component in place of classic methods such as correlation coefficients. As result of principal component, it revealed that change in relationship among traits under different stresses is plausible.Keywords: salinity, drought, stepwise regressions, principal component analysis, cluster analysis. (0, 3,2, 6,4, 9,6 e 12,3 dS m -1 RESUMO -Levando-se em consideração que a modelagem e indicação de relações entre os traços e variáveis estão entre as técnicas numéricas mais úteis nas pesquisas biológicas e botânicas, assim como o impacto inegável dos estresses hídrico e salino, esta pesquisa foi realizada com o objetivo de investigar mudanças na relação entre os traços em condições de estresses hídrico e salino, separadamente, relacionados à planta medicinal de distribuição esparsa chamada espinheiro-decristo (Ziziphus spina-christi). Foi conduzido um experimento em estufa, em condições controladas, na Faculdade de Agricultura da Universidade de Shiraz, Shiraz, Iran. Cinco níveis diferentes de estresse hídrico (irrigação nos intervalos de quatro, seis, oito e dez dias, em comparação com as plantas do grupo controle não submetidas a estresse, nos dias pares de irrigação) e cinco níveis de estresse salino

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Section: Resultsmentioning

confidence: 99%

Finding out Relationships Among Some Morpho-Biochemical Parameters of Christ's Thorn (Ziziphus spina-christi) under Drought and Salinity Stresses

Nejat

Sadeghi

2016

Planta daninha

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“…ex A. Gray, an herbaceous legume (Bhattarai et al 2008). However, none of these studies included SLA or SRL in their datasets.…”

Section: Introductionmentioning

confidence: 99%

Genetic Variation for Adaptive Traits in Bottlebrush Squirreltail in the Northern Intermountain West, United States

Parsons

Jones

Monaco

2011

Restoration Ecology

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Adaptive-trait correlations in plant ecology are often calculated among species, but in order to develop and characterize plant materials of target species for restoration, intraspecific comparisons are of greatest relevance. Elymus elymoides (Raf.) Swezey (bottlebrush squirreltail) is an important component of sagebrush-steppe communities in the northern Intermountain West, United States. We evaluated 32 accessions of E. elymoides subspecies C, a newly recognized unnamed taxon, in the field and greenhouse. Our objectives were to assess genetic diversity for putatively adaptive traits, to elucidate biological relationships among biomass, morphological, and phenological traits through correlation analysis, and to gather evidence suggesting whether these traits might be truly adaptive, that is, related to collection-site variables. We observed a positive correlation (r = 0.73; p < 0.01) between greenhouse shoot and root biomass among accessions, suggesting that shoot and root biomass are not in an inherent trade-off relationship across accessions. In addition, accessions with higher greenhouse shoot biomass possessed lower specific leaf area (r = −0.43; p < 0.05) and lower specific root length (r = −0.47, p < 0.05). Correlations between greenhouse and field-measured productivity traits were not significant (p > 0.05), indicating seedling performance is not predictive of mature-plant performance. Elevation was the collection-site variable most closely correlated with plantmeasured traits, particularly phenological dates, whereas average annual precipitation was the least significant variable. Therefore, elevation may be used as an easily applied metric to match subspecies C plant material to restoration site in the northern Intermountain West.

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“…For A. filipes, flowers are initiated individually over a long period, making a single once-over harvest less successful and seed yields lower. Bhattarai et al (2008) reported A. filipes seed yields under irrigation in Utah in the range of 0-24 kg · ha -1 . Seed yields in the present study were slightly higher.…”

Section: Discussionmentioning

confidence: 99%

“…Gray] are long-lived perennials native to the western United States. These three species are important components of rangeland ecosystems of the intermountain West and are nontoxic to herbivores (Bhattarai et al, 2008(Bhattarai et al, , 2010. Dalea ornata and A. filipes occur in the northern Intermountain area and D. searlsiae is found in southwestern Intermountain area.…”

Section: Restoration Of Lands In the Intermountainmentioning

confidence: 99%

Irrigation Requirements for Seed Production of Three Leguminous Wildflowers of the U.S. Intermountain West

Shock¹,

Feibert²,

Rivera³

et al. 2018

horts

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Increasing the supply of native wildflower seed is essential for restoring burned and degraded wildlands in the Intermountain West. Limitations to wildland seed collection necessitate development of effective cultural practices to improve reliability of seed production in agricultural fields. Irrigation trials were conducted over multiple years for three perennial species in the Fabaceae family [Dalea ornata (Douglas ex Hook.) Eaton & J. Wright, Dalea searlsiae (A. Gray) Barneby, and Astragalus filipes Torr. ex A. Gray]. Each of the three species was grown at the Oregon State University Malheur Experiment Station, Ontario, OR and received 0, 100, or 200 mm·year−1 of drip irrigation in four equal biweekly increments during bud formation and flowering. Seed yield responses to irrigation were evaluated by linear and quadratic regression against 1) applied water, 2) applied water plus spring precipitation, 3) applied water plus winter and spring precipitation, and 4) applied water plus fall, winter, and spring precipitation. In general, seed yields responded quadratically to irrigation. Adding fall, winter, and spring precipitation to applied water improved the accuracy of estimated water requirements for maximum seed production of D. ornata and D. searlsiae. For D. ornata, the highest yields averaged 396 kg·ha−1 and ranged from 146 to 545 kg·ha−1. Averaged over 6 years, seed yield of D. ornata was highest with applied water plus fall, winter, and spring precipitation totaling 393 mm. For D. searlsiae, the highest yields averaged 260 kg·ha−1 and ranged from 51 to 424 kg·ha−1. Averaged over 6 years, seed yield of D. searlsiae was highest with applied water plus fall, winter, and spring precipitation totaling 412 mm. Seed yields of A. filipes ranged from 7 to 110 kg·ha−1 depending on year and averaged 40 kg·ha1 over 6 years. Seed yields of A. filipes did not respond to irrigation in any of the 5 years of testing.

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Physiological and Morphological Characterization of Basalt Milkvetch (Astragalus filipes): Basis for Plant Improvement

Cited by 21 publications

References 32 publications

Finding out Relationships Among Some Morpho-Biochemical Parameters of Christ's Thorn (Ziziphus spina-christi) under Drought and Salinity Stresses

Finding out Relationships Among Some Morpho-Biochemical Parameters of Christ's Thorn (Ziziphus spina-christi) under Drought and Salinity Stresses

Genetic Variation for Adaptive Traits in Bottlebrush Squirreltail in the Northern Intermountain West, United States

Irrigation Requirements for Seed Production of Three Leguminous Wildflowers of the U.S. Intermountain West

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