Relations between yield and photosynthetic activity of winter wheat varieties

Kutasy, Erika; Csajbók, József; Borbély, Éva Hunyadi

doi:10.1556/crc.33.2005.1.42

Cited by 7 publications

(5 citation statements)

References 5 publications

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“…According to data reported, chlorophyll photosynthetic potential (ChPhP), which characterizes the total amount of chlorophyll in the above-ground parts of plants (or in leaves) per unit of ground surface area during the growing season or a certain period, is most closely related to crop yield (1)(2)(3). In different winter wheat genotypes we have found a close correlation between ChPhP in leaves and crop productivity allowing forecasting the yield magnitude (4).…”

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confidence: 99%

A RELATIONSHIP BETWEEN CHLOROPHYLL PHOTOSYNTHETIC POTENTIAL AND YIELD IN WINTER WHEAT (Triticum aestivum L.) AT ELEVATED TEMPERATURES

Priadkina¹,

Стасик²,

Mikhalskaya³

et al. 2014

S-h. biol.

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A b s t r a c t Development of the indices for selection of high-yielding crops and the models, forecasting crop yields, necessitate the analysis of the relationship between photosynthetic traits and productivity. Chlorophyll photosynthetic potential, characterizing the total amount of chlorophyll in the aboveground parts of plants (or in leaves) per unit of ground surface area during the growing season or a certain period, under optimal weather conditions correlated most closely with yield (T.M. Shadchina et al., 2007; E. Kutasy et al., 2005). Modern global climate change may primarily affect the heatsensitive crops in particular winter wheat causing disruption in the relationship between photosynthetic traits and productivity. In field experiment, we examined the effects of increased air temperatures during the spring-summer growing season on indices of photosynthetic apparatus in the highyielding varieties of common winter wheat Smuhlyanka and Pereyaslavka on the different levels of mineral nutrition (without fertilizers and fertilizing in the fall and at different phases of the springsummer vegetation in doses N 90 P 60 K 60 S 10 and N 120 P 90 K 90 S 20 ). Investigations were carried out in 2009 and 2011 with elevated air temperatures during the growing season at the experimental agricultural station of the Institute of Plant Physiology and Genetics, National Academy of Sciences of Ukraine (Kiev region). It was shown that such weather conditions led to a decrease in the chlorophyll content in the leaves, the size of crop surface and the duration of its operation, as well as grain yield. In all cases (both at high level of mineral nutrition and without fertilizers) leaf surface area in 2009 was higher than under the corresponding treatments in 2011 at all studied vegetation phases. Mineral fertilizers increased the leaf area index in both years by average 1.5-2.0 times (in Pereyaslavka at milk-wax ripeness phase it increased almost 5 times if compared to the control). Chlorophyll content in leaves of both varieties depended on year: it was 5.5-6.0 and 3.5-4.5 mg/dm 2 , respectively, in 2009 and 2011 if fertilizers were used, and 3.2-4.3 and 2.8 mg/dm 2 , respectively, in the control. In most cases, the maximum values of the pigments content in the averaged sample of all green leaves from plant were observed in the phase of milk ripeness, probably, due to the complete withering away of leaves of lower layers. Mineral fertilizers increased the amount of chlorophyll in the leaves of both varieties. According to the results of dispersion analysis (F-Fisher test), the greatest influence on changes in the indices of the photosynthetic capacity in our experiments have the conditions of the year, the second most important factor was the level of mineral nutrition. The value of chlorophyll photosynthetic potential was more dependent on a combination of factors «variety ½ year conditions» and less on the interaction of the factors «year conditions ½ mineral nutrition level» and «variety ½ mineral nutrition level». Hi...

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confidence: 99%

A RELATIONSHIP BETWEEN CHLOROPHYLL PHOTOSYNTHETIC POTENTIAL AND YIELD IN WINTER WHEAT (Triticum aestivum L.) AT ELEVATED TEMPERATURES

Priadkina¹,

Стасик²,

Mikhalskaya³

et al. 2014

S-h. biol.

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“…Drought affects photosynthesis parameters of the plants, especially stomatal conductance and in consequence intercellular CO 2 level of the leaves [33][34][35][36]. In April and May, the plants were in drought stress according to the intercellular CO 2 levels and the total conductance to carbon dioxide.…”

Section: Discussionmentioning

confidence: 99%

Photosynthetic and Agronomic Traits of Winter Barley (Hordeum vulgare L.) Varieties

2020

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We tested six winter barley (Hordeum vulgare L.) cultivars in a small plot field experiment, measuring photosynthesis and other parameters three times during the growing season. Four genotypes—Andoria, Jakubus, Paradies and Zophia—are new, promising varieties with requirements of intensive technology, high yield potential and very good disease resistance. The two popular Hungarian varieties (KG Apavár and KG Puszta) are relatively old but they have good tolerance to extreme ecological conditions and outstanding resistance and winter hardiness. The aim of our research was to test the new varieties’ performance. Several recent studies found close connections among various photosynthetic parameters in barley, and we confirmed that in our research. There were significant differences between the varieties in the assimilation rate—the highest values were measured at the BBCH 47–49 stage (end of booting), except Jakubus and Zophia, where the highest values were at BBCH 73–75 (milk ripe). The cultivars’ response to irradiation change varied, especially at higher photosynthetic photon flux density (PPFD) levels. In April and May, the plants were in drought stress according to the intercellular CO2 level and the total conductance to carbon dioxide. The differences between the air and leaf temperature were also low, indicating water stress, but the assimilation rate was relatively high (9.07–14.09 µmol m−2 s−1).We found a close connection between normalized difference vegetation index (NDVI) values and grain protein content in each of the tested barley cultivars. The correlation was significant, at p = 0.01 level. The protein yield per hectare was determined rather by grain yield than protein content. The relationship between the NDVI values and grain yield was moderate, but NDVI values and protein content are in strong correlation.

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“…The sensitivity of GK É let from an agronomic aspect is well known (Kutasy et al 2005), as its yield parameters decrease under drought stress. Our results indicated that the root length did not characterize the sensitivity of these varieties, as the sensitive GK É let had longer and the tolerant Mv Emese had shorter root system.…”

Section: Discussionmentioning

confidence: 99%

“…GK É let, were investigated under control and osmotic stress conditions. The drought sensitivities of the varieties were determined by breeders on the basis of the yield (tonnes per hectare) and yield stability in drought years (Kutasy et al 2005;Hoffmann and Burucs 2005). Plants were grown in a hydroponic culture in Hoagland nutrient solution (5 mM Ca(NO 3 ) 2 , 5 mM KNO 3 , 1 mM KH 2 PO 4 , 2 mM MgSO 4 , 1 lM Fe-EDTA, 0.0475 lM H 3 BO 3 , 14.48 lM MnCl 2 , 0.8148 lM ZnCl 2 , 0.3731 lM CuCl 2 , 0.001213 lM Na 2 MoO 4 ), at a light intensity of 300 lmol m -2 s -1 , under a 12-h day/12-h night cycle, at 25/20°C day/night temperature and at 55-60% air humidity.…”

Section: Methodsmentioning

confidence: 99%

Relationship between osmotic stress-induced abscisic acid accumulation, biomass production and plant growth in drought-tolerant and -sensitive wheat cultivars

et al. 2010

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The effects of increasing osmotic stress induced by 100-400 mOsm (-0.976 MPa) polyethylene glycol (PEG 6000) were investigated in a drought-tolerant (Triticum aestivum L. cv. Mv Emese) and drought-sensitive (cv. GK É let) wheat cultivar at the three-leaf stage. During osmotic stress, the decline of the water potential (w w ) was more significant in the leaves, while the abscisic acid (ABA) levels of the roots increased earlier and remained higher in the sensitive than in the tolerant variety. There was an increasing gradient of ABA content toward the youngest leaves in the drought-sensitive GK É let, while more ABA accumulated in the fully developed, older leaves of the tolerant cultivar Mv Emese. In accordance with the rapid and significant accumulation of ABA, the stomatal conductance decreased earlier in the tolerant cultivar. The effect of water stress on the PSII photochemistry was pronounced only 1 week after the exposure to PEG, as indicated by the earlier decrease of the net CO 2 fixation, the effective quantum yield (U PSII ) and the photochemical quenching (q P ) in light-adapted samples of the tolerant variety in 400 mOsm PEG 6000. The stress treatment caused more significant reductions in these parameters toward the end of the experiment in the sensitive cultivar. In spite of small differences in the photosynthetic characteristics, the net biomass production was not significantly altered by this osmotic stress. The accumulation of ABA controlled the distribution of the biomass between the shoot and root systems under osmotic stress, and contributed to the development of stronger and deeper roots in the drought-sensitive cultivar GK É let. However, the root elongation did not correlate with the drought sensitivity of these cultivars on the basis of crop yield.

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Relations between yield and photosynthetic activity of winter wheat varieties

Cited by 7 publications

References 5 publications

A RELATIONSHIP BETWEEN CHLOROPHYLL PHOTOSYNTHETIC POTENTIAL AND YIELD IN WINTER WHEAT (Triticum aestivum L.) AT ELEVATED TEMPERATURES

A RELATIONSHIP BETWEEN CHLOROPHYLL PHOTOSYNTHETIC POTENTIAL AND YIELD IN WINTER WHEAT (Triticum aestivum L.) AT ELEVATED TEMPERATURES

Photosynthetic and Agronomic Traits of Winter Barley (Hordeum vulgare L.) Varieties

Relationship between osmotic stress-induced abscisic acid accumulation, biomass production and plant growth in drought-tolerant and -sensitive wheat cultivars

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