Plant Production, Photosynthesis Rate and Related Characters in Doubled-Haploid Lines of Nicotiana Tabacum Selected by Photosynthetical Efficiency

Medrano, H.; Pol, Andreu Moiá; Delgado, E.

doi:10.1007/978-1-4684-8571-4_56

Cited by 4 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, the specific leaf dry weight was also higher in these lines ( Table I), suggesting that SP lines had a higher total dry weight of the aerial part. Earlier growth assays made under field conditions also showed higher yields of the aerial part (both dry biomass and leaf area) in SP lines (20).…”

Section: Results and Discussion Analysis Of Leaf Componentsmentioning

confidence: 72%

“…A series of field assays showed consistent advantage of selected SP lines2 in plant dry matter production in comparison with the unselected source cultivar (20). These field assays also showed a consistent increase in plant leaf area in those lines.…”

Section: Introductionmentioning

confidence: 65%

“…The floral buds of surviving haploids were treated with colchicine, and diploid fertile flowers were developed. After self-pollination, viable seeds were obtained from five selected lines.A series of field assays showed consistent advantage of selected SP lines2 in plant dry matter production in comparison with the unselected source cultivar (20). These field assays also showed a consistent increase in plant leaf area in those lines.…”

mentioning

confidence: 65%

See 2 more Smart Citations

Leaf Photosynthesis and Respiration of High CO₂-Grown Tobacco Plants Selected for Survival under CO₂ Compensation Point Conditions

Delgado¹,

Azcón-Bieto²,

Aranda³

et al. 1992

Plant Physiol.

View full text Add to dashboard Cite

Four self-pollinated, doubled-haploid tobacco, (Nicotiana tabacum L.) lines (SP422, SP432, SP435, and SP451), selected as haploids by survival in a low CO2 atmosphere, and the parental cv Wisconsin-38 were grown from seed in a growth room kept at high CO2 levels (600-700 parts per million). The selected plants were much larger (especially SP422, SP432, and SP451) than Wisconsin-38 nine weeks after planting. The specific leaf dry weight and the carbon (but not nitrogen and sulfur) content per unit area were also higher in the selected plants. However, the chlorophyll, carotenoid, and alkaloid contents and the chlorophyll a/b ratio varied little. The net CO2 assimilation rate per unit area measured in the growth room at high CO2 was not higher in the selected plants. The CO2 assimilation rate versus intercellular CO2 curve and the CO2 compensation point showed no substantial differences among the different lines, even though these plants were selected for survival under CO2 compensation point conditions. Adult leaf respiration rates were similar when expressed per unit area but were lower in the selected lines when expressed per unit dry weight. Leaf respiration rates were negatively correlated with specific leaf dry weight and with the carbon content per unit area and were positively correlated with nitrogen and sulfur content of the dry matter. The altemative pathway was not involved in respiration in the dark in these leaves. The better carbon economy of tobacco lines selected for low CO2 survival was not apparently related to an improvement of photosynthesis rate but could be related, at least partially, to a significantly reduced respiration (mainly cytochrome pathway) rate per unit carbon.The relationship between leaf photosynthesis rate and plant productivity is difficult to establish even though dry matter accumulation obviously reflects the efficiency of the plant photosynthetic processes (14,23). It is well accepted that total canopy photosynthesis during the growth period is closely related to yield, as has been reported in several species (4,29). However, many attempts to improve leaf photosynthesis per unit area by genetic selection did not result in any substantial increase of crop productivity (23,24,27 Haploids were obtained from ethylmethylsulfonate-treated anthers. These selected haploid plants showed a higher growth rate, greater leaf area, and plant production under greenhouse conditions. The floral buds of surviving haploids were treated with colchicine, and diploid fertile flowers were developed. After self-pollination, viable seeds were obtained from five selected lines.A series of field assays showed consistent advantage of selected SP lines2 in plant dry matter production in comparison with the unselected source cultivar (20). These field assays also showed a consistent increase in plant leaf area in those lines. Nevertheless, CO2 assimilation rate of detached leaves did not show substantial differences among selected lines and the control one (12,13

show abstract

Section: Results and Discussion Analysis Of Leaf Componentsmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 65%

mentioning

confidence: 65%

See 1 more Smart Citation

Leaf Photosynthesis and Respiration of High CO₂-Grown Tobacco Plants Selected for Survival under CO₂ Compensation Point Conditions

Delgado¹,

Azcón-Bieto²,

Aranda³

et al. 1992

Plant Physiol.

View full text Add to dashboard Cite

show abstract

Photosynthesis Dark Respiration and Plant Production in Nicotiana Tabacum Genotypes Derived from Haploids Selected by Low CO2 Survival

Delgado¹,

Azcón-Bieto

Medrano³

1990

Current Research in Photosynthesis

View full text Add to dashboard Cite

Photosynthesis Improvement as a Way to Increase Crop Yield

Medrano

Vadell

1993

Photosynthesis: Photoreactions to Plant Productivity

View full text Add to dashboard Cite

Plant Production, Photosynthesis Rate and Related Characters in Doubled-Haploid Lines of Nicotiana Tabacum Selected by Photosynthetical Efficiency

Cited by 4 publications

References 7 publications

Leaf Photosynthesis and Respiration of High CO₂-Grown Tobacco Plants Selected for Survival under CO₂ Compensation Point Conditions

Leaf Photosynthesis and Respiration of High CO₂-Grown Tobacco Plants Selected for Survival under CO₂ Compensation Point Conditions

Photosynthesis Dark Respiration and Plant Production in Nicotiana Tabacum Genotypes Derived from Haploids Selected by Low CO2 Survival

Photosynthesis Improvement as a Way to Increase Crop Yield

Contact Info

Product

Resources

About

Plant Production, Photosynthesis Rate and Related Characters in Doubled-Haploid Lines of Nicotiana Tabacum Selected by Photosynthetical Efficiency

Cited by 4 publications

References 7 publications

Leaf Photosynthesis and Respiration of High CO2-Grown Tobacco Plants Selected for Survival under CO2 Compensation Point Conditions

Leaf Photosynthesis and Respiration of High CO2-Grown Tobacco Plants Selected for Survival under CO2 Compensation Point Conditions

Photosynthesis Dark Respiration and Plant Production in Nicotiana Tabacum Genotypes Derived from Haploids Selected by Low CO2 Survival

Photosynthesis Improvement as a Way to Increase Crop Yield

Contact Info

Product

Resources

About

Leaf Photosynthesis and Respiration of High CO₂-Grown Tobacco Plants Selected for Survival under CO₂ Compensation Point Conditions

Leaf Photosynthesis and Respiration of High CO₂-Grown Tobacco Plants Selected for Survival under CO₂ Compensation Point Conditions