Genotypic variation in plant productivity and consequences for breeding of ‘low-input cultivars’

Dambroth, Manfred; Bassam, Nasir El

doi:10.1007/978-94-009-2053-8_1

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…Several studies suggest that high-yielding varieties are more sensitive to reduced nutrient availability than varieties with lower yield potential (Fischbeck, 1988;Dambroth and El Bassam, 1990). A similar response may be hypothesized for safflower vs. sunflower, which is known for its comparatively high K demand (Grove and Sumner, 1982).…”

Section: Introductionmentioning

confidence: 90%

“…Particularly in developing countries, where the proportion of less fertile soils is particularly high, it may be difficult to fulfil the nutritional requirements of high-yielding crops. Fertilizer application represents an important measure to correct nutrient deficiencies and to replace elements removed in the products harvested (Dambroth and El Bassam, 1990;Sattelmacher et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

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Effects of potassium supply on growth and yield of safflower as compared to sunflower^§

Abbadi

Gerendás²,

Sattelmacher³

2008

Z. Pflanzenernähr. Bodenk.

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Safflower may have a certain production potential under German conditions, particularly in organic farming where the putatively low nutrient requirement is highly welcomed. However, current knowledge regarding the nutrient requirements of safflower as compared to similar oil crops is limited. It was thus the aim of this study to determine the growth and yield response of safflower (Carthamus tinctorius L.) as compared to sunflower (Helianthus annuus L.) with respect to potassium (K) supply. Three safflower and two sunflower plants were cultivated in 5 L Mitscherlich pots. Both species responded strongly to increasing K supply with respect to plant growth and yield. Growth and yield of safflower increased up to 1 g K per pot, while the optimum for sunflower was 3.0 g K per pot. Safflower out-yielded sunflower at low K supply, while at high K level, the opposite was observed. Supply of K affected virtually all yield components in both species, though to different degree. The number of capitula in safflower was only slightly affected, and the number of achenes per capitulum was only reduced under severe K deficiency, while single-achene mass increased with increasing K supply. In sunflower, the number of achenes per capitulum strongly responded to the K supply, as did the single-achene mass. Oil yield in safflower was affected by K deficiency mainly due to reduced achene yield, not oil concentration. However, oil yield in sunflower was severely affected by low K supply due to both reduced achene yield and lowered oil concentration. Multiple-regression analyses indicate that in sunflower, the stem dry matter (DM) and the total amount of K accumulated in the aboveground biomass were most important, while in safflower the total amount of K and N accumulated had the highest impact. It is concluded that sunflower is more sensitive to inadequate K supply than safflower.

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Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Effects of potassium supply on growth and yield of safflower as compared to sunflower^§

Abbadi

Gerendás²,

Sattelmacher³

2008

Z. Pflanzenernähr. Bodenk.

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“…Some researchers stated that yield potential is different among cultivars and local lines. Moreover, absorption and storage of nutrients are various (Altin and Frey, 1990;Dambroth and El Bassam, 1990;Damisch and wilberg, 1991;Fichbeck, 1988;Haneklaus and Schnug, 1993;hassanzadeh-Gorttapeh, 2007) as well as Znuse efficiency. Samples with higher ability toabsorb nutrient (Zn) had the highest efficiency (genotypes 4,7,10,26,33,80,94 and Shahriyar cultivar).…”

Section: Resultsmentioning

confidence: 99%

“…Since some of the nutrients may be lost or become inaccessible in various ways. Achieving the optimal yield per unit is possible by applying chemical fertilizers (Dambroth and Bassam. 1990).…”

Section: Introductionmentioning

confidence: 99%

THE STUDY OF GENETIC VARIABILITY IN ASSOCIATION WITH ZINC UPTAKE EFFICIENCY IN Triticum aestivum L GENOTYPES

Ghorttapeh¹,

Agricultural²,

Majidi³

et al. 2018

International Conference on Bioscience and Biotechnology

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Diversity in agro ecosystems can improve the sustainability of cropping systems in terms of low external inputs and unpredictable climate changes. Agricultural ecosystems in the world are widely related to economical and social status. The major aim of agricultural ecosystems management is to maximize nutrient flow and human service materials. Nutrient efficiency in wheat is very complex. It includes nutrient acquisition efficiency and nutrient use efficiency. In this study 26 winter wheat genotypes were used to investigate the interactive effects between genotypes and the use efficiencies of the Zn micronutrient of the grain. An experiment was carried out in Agricultural and Natural Resources Research and Education, Center of West Azerbaijan, in which Genotypes were planted in complete randomized block design with three replications. The traits such as plant height, biological and grain yield, harvest index, length of spike, number of kernel per spike, thousand kernel weight and spike weight were measured or calculated. Concentration of Zn in the grain was measured by dry combustion using Perkin Elmer 2380 Atomic Absorption Spectroscopy. Zinc uptake was calculated by multiplying grain Zn concentration in the grain yield. It was revealed that biomass weight of whole plot, plant height, number of kernel per spike, grain yield of main culms, biological yield, length of spike and number of spikelet/spike were positively correlated with grain yield, while the grain protein percentage was negatively correlated with the grain yield. Variance analysis showed that there were highly significant differences among traits. The results obtained in this study indicate that nutrient use efficiency of the Zn varies widely within wheat genotypes. Some genotypes were identified as being Zn use efficiency. These are considered as lowinput genotypes. It seems that a special breeding programmer of crop cultivars for low Zn nutrient and stress condition could be successful. Improving the cultivar response to Zn nutrient will help to reduce inputs and hence protect the environment.

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“…Although many soils have large reserves of total P, only a small fraction is immediately available making many agricultural areas P deficient, therefore application of fertilizer P represents an important measure to correct nutrient deficiencies and to replace elements that have been removed in the products harvested (Dambroth and El Bassam, 1990). In organic farming, where application of inorganic P fertilizers is not permitted, the P availability is not easily increased.…”

Section: Introductionmentioning

confidence: 98%

Phosphorus use Efficiency of Safflower (Carthamus tinctoriusL.) and Sunflower (Helianthus annuusL.)

Abbadi

Gerendás²

2014

Journal of Plant Nutrition

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This study comparatively evaluates phosphorus (P) use efficiency of safflower and sunflower in view of identifying low input oil crops. Sunflower accumulated more P than safflower at all equivalent P supplies. Sunflower was more efficient at their best P supplies to utilize absorbed P than safflower in terms of efficiency ratio and utilization index. Yield response curves interpreting the functional relationship between nutrient supply and yield using Michaelis-Menten equation indicate that sunflower is less sensitive to inadequate P supply and thus more P-efficient than safflower with respect to yield, as the term 'Km' is lower for sunflower. The minimal P amount per pot required to trigger yield formation (term 'Cmin') was lower in sunflower than safflower. Harvest Index in sunflower out-yielded that of safflower at all P supplies. Critical deficiency contents of sunflower were lower than that for safflower. It can be concluded that

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Genotypic variation in plant productivity and consequences for breeding of ‘low-input cultivars’

Cited by 10 publications

References 4 publications

Effects of potassium supply on growth and yield of safflower as compared to sunflower^§

Effects of potassium supply on growth and yield of safflower as compared to sunflower^§

THE STUDY OF GENETIC VARIABILITY IN ASSOCIATION WITH ZINC UPTAKE EFFICIENCY IN Triticum aestivum L GENOTYPES

Phosphorus use Efficiency of Safflower (Carthamus tinctoriusL.) and Sunflower (Helianthus annuusL.)

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Genotypic variation in plant productivity and consequences for breeding of ‘low-input cultivars’

Cited by 10 publications

References 4 publications

Effects of potassium supply on growth and yield of safflower as compared to sunflower§

Effects of potassium supply on growth and yield of safflower as compared to sunflower§

THE STUDY OF GENETIC VARIABILITY IN ASSOCIATION WITH ZINC UPTAKE EFFICIENCY IN Triticum aestivum L GENOTYPES

Phosphorus use Efficiency of Safflower (Carthamus tinctoriusL.) and Sunflower (Helianthus annuusL.)

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Product

Resources

About

Effects of potassium supply on growth and yield of safflower as compared to sunflower^§

Effects of potassium supply on growth and yield of safflower as compared to sunflower^§