The influence of physiological processes on tuber yield of potato clones (Solanum tuberosum L.): Stomatal diffusive resistance, stomatal conductance, gross photosynthetic rate, leaf canopy, tissue nutrient levels, and tuber enzyme activities

Dwelle, R. B.; Kleinkopf, G. E.; Steinhorst, R. Kirk; Pavek, J. J.; Hurley, P. J.

doi:10.1007/bf02362015

Cited by 46 publications

(9 citation statements)

References 13 publications

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“…monsoon, the evaporative demand decreased Sebago). DwELLE et al (1981bDwELLE et al ( , 1983 have and P-PET became positive. In the second year, shown, with several potato clones, that early planting in April resulted in the extension although individual leaves would reach maxiof the dry spell to a period of 10 weeks after mum photosynthetic rate at 60 % of full planting.…”

Section: Discussionmentioning

confidence: 95%

Bio‐mass Production in Potato in Relation to Evapotranspiration and Energy Summation Indices in Northern Hills of India

Nagarajan

Sukumaran

Sastry

1994

J Agronomy Crop Science

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In field experiments conducted for 2 consecutive years at Shimla (31''06'N, 77°10'E at 2202 m above mean sea level with potato {Solarium tuberosum L.), weekly means of rainfall (P), potential evapotranspiration (PET), pan evaporation (PAN) and photosynthetically active radiation (PAR) were estimated during the crop season. It was evident that from April to end of June, the evaporative demand was more than the precipitation and that the crop suffered from water deficit from emergence to tuber initiation. Four different energy summation indices accumulated over important phenological stages of growth and energy-use efficiency in terms of biomass production at these stages were estimated for two seasons. Weekly cumulative biomass production showed a significant correlation with accumulated PET, PAN and PAR in the four genotypes tested in year 2.

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Section: Discussionmentioning

confidence: 95%

Bio‐mass Production in Potato in Relation to Evapotranspiration and Energy Summation Indices in Northern Hills of India

Nagarajan

Sukumaran

Sastry

1994

J Agronomy Crop Science

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“…Genotypic differences in stomatal resistance in potato have been reported (Dwelle et al 1981;Levy et al 1989;Ekanayake and De Jong 1992), with clones that had higher resistance also exhibiting lower transpiration rates (Levy et al 1989). Drought tolerant plants are characterised by low stomatal resistance under irrigated conditions and high stomatal resistance under drought (Golestani Araghi and Assad 1998;Pinheiro et al 2005;Serrano and Penuelas 2005).…”

Section: Discussionmentioning

confidence: 97%

Field Screening for Variation of Drought Tolerance in Solanum tuberosum L. by Agronomical, Physiological and Genetic Analysis

et al. 2007

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Solanum tuberosum cultivars, Solanum tuberosum × Solanum tuberosum subsp. andigena hybrids and breeding clones with different time to maturity were screened for drought tolerance in field plots located in the coastal desert of Peru. Variation for drought tolerance was illustrated by clone-dependent differences in tuber yield and yield loss under drought conditions. Neither changes in stomatal conductance nor maximum quantum yield of chlorophyll fluorescence were quantitatively associated with yield or yield loss under drought. In contrast, relative vegetation index (reflectance at 800 nm / reflectance at 650 nm) and normalized difference vegetation index [(reflectance at 800 nm -reflectance at 650 nm) / (reflectance at 800 nm + reflectance at 650 nm)] on day 25 and day 40 after drought were correlated with yield. The vegetation indices are related to leaf area index and above ground biomass, which appeared to be major determinants for yield in the tested cultivars under drought. Nitrate reductase activity was significantly decreased in drought-exposed plants, but activity depletion was independent of yield or yield maintenance. Putative drought tolerance genes were differentially expressed in leaves of water stressed genotypes. Induction of the protein phosphatase 2C gene was positively associated with yield maintenance under drought. Furthermore, Potato Research (2007) 50:71-85

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“…Leaf area and PHOT were both highly correlated with TDW, but this does not necessarily imply causal relationships between TDW and these factors. In several studies, differences among cultivars in dry matter production are highly correlated with leaf area, but not with leaf photosynthesis rate (Dwelle et al, 1981;Shimshi and Susnoschi, 1985;Prange, 1987). This indicates that leaf area is the most important factor in light capture and plant growth.…”

Section: Discussionmentioning

confidence: 98%

Photosynthesis, transpiration and plant growth characters of different potato cultivars at various densities of Globodera pallida

Schans¹,

Arntzen

1991

Netherlands Journal of Plant Pathology

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Plants of four potato (Solanum tuberosum L.) cultivars were grown in pots in a greenhouse at five densities of Globoderapallida between 0 and 300 eggs per gram of soil. Photosynthesis and transpiration of selected leaves were measured at 30, 37, 49 and 60 days after planting. Stem length was recorded at weekly intervals. Plants were harvested 70 days after planting and various plant variables were determined.At 30 days after planting, when second and third stage juveniles were present in roots, both photosynthesis and transpiration rates were severely reduced by G. pallida. In the course of time these effects became less pronounced. Water use efficiency was reduced by G. pallida between 30 and 49 days, but not at 60 days after planting. The results suggest independent effects of G.pallida on stomatal opening and on photosynthesis reactions. There were no consistent differences among cultivars in the response of leaf gas exchange rates and water use efficiency to nematode infection. Reduction of photosynthesis by G. pallida appeared additive to photosynthesis reduction due to leaf senescence.Total dry weight was reduced by 60 ~ at the highest G. pallida density. Weights of all plant organs were about proportionally affected. Shoot/root ratio was not affected and dry matter content was reduced. Stem length and leaf area were most strongly reduced during early stages of plant-nematode interaction. The number of leaves formed was only slightly reduced by G.pallida, but flowering was delayed or inhibited. Reduction of total dry weight correlated with reduction of both leaf area and photosynthesis rate. Leaf area reduction seems the main cause of reduction of dry matter production. Tolerance differences among cultivars were evident at 100 eggs per gram of soil only, where total dry weight of the intolerant partially resistant cv. Darwina was lower than that of the tolerant partially resistant cv. Elles and of the tolerant susceptible cv. Multa. The tolerance differences were not correlated with leaf photosynthesis and transpiration. Apparently these processes are not part of tolerance of plants.Additionallceywords: potato cyst nematodes, Solanum tuberosum L., host-parasite interaction, damage mechanism, tolerance, gas exchange, stomata, water use efficiency, total dry weight, leaf area, stem length.

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The influence of physiological processes on tuber yield of potato clones (Solanum tuberosum L.): Stomatal diffusive resistance, stomatal conductance, gross photosynthetic rate, leaf canopy, tissue nutrient levels, and tuber enzyme activities

Cited by 46 publications

References 13 publications

Bio‐mass Production in Potato in Relation to Evapotranspiration and Energy Summation Indices in Northern Hills of India

Bio‐mass Production in Potato in Relation to Evapotranspiration and Energy Summation Indices in Northern Hills of India

Field Screening for Variation of Drought Tolerance in Solanum tuberosum L. by Agronomical, Physiological and Genetic Analysis

Photosynthesis, transpiration and plant growth characters of different potato cultivars at various densities of Globodera pallida

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