Cold Hardiness of Saltgrass Accessions

Shahba, Mohamed A.; Qian, Yaling; Hughes, Harrison; Christensen, D.; Koski, A. J.

doi:10.2135/cropsci2003.2142

Cited by 14 publications

(15 citation statements)

References 11 publications

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“…Detailed results of freezing tolerance, including monthly LT 50 and winter survival in the field, among saltgrass accessions were presented in Shahba et al (2003) Briefly, freezing tolerance of all accessions increased in fall, reaching a maximal freezing tolerance in December and January with deacclimation occurring in March. Significant differences in freezing tolerance were observed among accessions in January in both seasons (Table 2) Accessions A29, 48, and 55 were most cold hardy in January 2000, with LT 50 down to about −20°C.…”

Section: Resultsmentioning

confidence: 99%

“…To determine freezing tolerance, seven to eight fractions of rhizomes were subjected to freezing treatments with a thermo‐controlled freezer (Tenny Jr. Programmable Freezer, Tenny Inc., South Brunswick, NJ) as previously described (Qian et al, 2001; Shahba et al, 2003). Each fraction contained at least 10 nodes.…”

Section: Methodsmentioning

confidence: 99%

“…A saltgrass breeding project is on‐going at Colorado State University, in cooperation with the University of Arizona, to develop saltgrass cultivars that can be used as turfgrass where soil and water salinity and alkalinity are high. In conjunction with saltgrass breeding efforts, we studied the freezing tolerance of six saltgrass accessions (Shahba et al, 2003). The objectives of this study were to: (i) determine seasonal changes in levels of sucrose, glucose, fructose, raffinose, and stachyose and (ii) relate these changes to the freezing tolerance in saltgrass.…”

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Relationships of Soluble Carbohydrates and Freeze Tolerance in Saltgrass

et al. 2003

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Information is lacking regarding the changes of endogenous soluble carbohydrates of saltgrass [Distichlis spicata (L.) Greene] during cold acclimation. The objective of this study was to quantify soluble carbohydrates and their relationships to freezing tolerance in six saltgrass accessions (A65, A29, C66, 32, 55, and 48). The study was performed at monthly intervals under natural acclimation in two consecutive winter seasons (October 1999–April 2000 and October 2000–April 2001) at Fort Collins, CO. Concurrent with LT50 (subfreezing temperature resulting in 50% mortality) assessment, soluble carbohydrates, including sucrose, fructose, glucose, raffinose, and stachyose were measured by gas chromatography (GC). Results indicated significant differences among accessions and sampling dates in LT50 and carbohydrate content. Sucrose was the predominant sugar, but did not show a clear seasonal trend and had no correlation with freezing tolerance. Fructose, glucose, raffinose, and stachyose exhibited clear seasonal changes, reaching highest concentrations during midwinter. In December of both seasons, higher concentration of fructose and glucose were observed in 48 and 55 as compared with other accessions. Accession A29 had the highest concentration of raffinose in December and January in both seasons. A29 also had the highest stachyose content in midwinter of 1999‐2000. Higher fructose, glucose, or raffinose concentrations were frequently observed in accessions of 48, 55, and A29, which coincided with their lower LT50 as compared with the other accessions. In contrast, C66 had the lowest sugar concentrations, which related to its sensitivity to low temperatures. These results indicate that fructose, glucose, raffinose, and stachyose may play important roles in saltgrass freezing tolerance.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

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Relationships of Soluble Carbohydrates and Freeze Tolerance in Saltgrass

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“…Saltgrass is a warm‐season grass that is dioecious (having male and female reproductive organs in separate plants), rhizomatous, salt tolerant (halophyte) and thrives in floodplains, alkaline swales and salt flats (Allred, ; Shahba et al ., ). Saltgrass is one of the most salt‐tolerant grasses when compared with other turf grasses (Warren and Brockelman, ; Alshammary, ; Qian et al ., ).…”

Section: Introductionmentioning

confidence: 97%

Assessment of the crop coefficient for saltgrass under native riparian field conditions in the desert southwest

et al. 2013

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Abstract:Limited urban water supplies in southwestern USA cause water managers and planners to re-assess water losses and needs from consumptive water use by riparian vegetation. Here, we report on field measurements of evapotranspiration (ET) for inland saltgrass [Distichlis spicata var. stricta (L.) Greene]; a once common riparian plant native to the desert southwest. The objective was to develop a saltgrass crop coefficient, Kc, similar to agricultural crop coefficients commonly used in irrigation water management. The developed Kc, in conjunction with the local climate, can then be used to assess the water savings that may be achieved in riparian zones for saltgrass versus invasive species and for use in irrigation management and scheduling of saltgrass in urban setting. The ET of saltgrass was measured in its native riparian setting located in the flood plain of the Rio Grande, north of Caballo Lake, New Mexico, in 2011 using an eddy covariance technique in the energy budget method. Total ET of 692 mm was measured during the growing season (n = 241 days) and 837 mm during the year. The American Society of Civil Engineers standardized ET for short crop (ETso) was calculated using climate data measured at the study site as 1560 mm during the growing season and 1870 mm during the year. Crop coefficients (ET/ETso) were fitted with a polynomial equation as a function of day of the year to develop saltgrass Kc function. A graphical and simplified method of computing Kc as a function of day of the year and crop season was also developed as an alternative method.

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“…In each experimental year, the experiment consisted of initial field sampling followed by the greenhouse N and burning studies. Clones were established in 5 · 5-m field plots at the Colorado State University (Shahba et al, 2003). Clones were replicated in the field twice in a randomized complete block design.…”

Section: Methodsmentioning

confidence: 99%

Saltgrass Clones' Spike Production Affected by Sampling Time, Nitrogen Fertilization, and Burning

Rukavina¹,

Hughes²

2008

hortte

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Saltgrass (Distichlis spicata) has received increased attention as a result of its low input needs. A good understanding of the factors that influence greater flower production in saltgrass clones would facilitate seed production management and hybridization in the breeding program. Therefore, the influence of sampling time from the field, nitrogen (N) fertilization, and burning on flowering spike production of five saltgrass clones from three cold-hardiness zones were evaluated over 2 years. Clones were sampled from the field at two times (August and November) in the first and at three times (August, November, and January) in the second experimental year. After field sampling, clones were transferred to the greenhouse and received N and burning treatments. N fertilization increased number of spikes (flowering) for all saltgrass clones by ≈30% in both experimental years. In the second experimental year, the number of spikes was increased to a greater extent when N was applied in combination with burning treatment as compared with N without burning. The burning treatment had a greater effect on the number of spikes in plants sampled in August as compared with those sampled in November and January. Sampling in November increased flowering in three clones as compared with August sampling, but with the greatest effect in clone A1540. Sampling in January further increased the number of spikes in clones 1490 and A1610 but with no significant effect on the number of spikes in clone A1540. Environmental adaptation associated with origin of saltgrass clones is a major factor that influences flowering spike production.

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Cold Hardiness of Saltgrass Accessions

Cited by 14 publications

References 11 publications

Relationships of Soluble Carbohydrates and Freeze Tolerance in Saltgrass

Relationships of Soluble Carbohydrates and Freeze Tolerance in Saltgrass

Assessment of the crop coefficient for saltgrass under native riparian field conditions in the desert southwest

Saltgrass Clones' Spike Production Affected by Sampling Time, Nitrogen Fertilization, and Burning

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