Wyniki wyszukiwania - AGRO

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Relationship between yield components and seed yield obtained from oil crops of the family Brassicaceae

100%

Jankowski K. J., Budzynski W. S., Hulanicki P.

Rośliny Oleiste - Oilseed Crops

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2015

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tom 36

2

Factors influencing marketable yield and berry size in short-day strawberry varieties in two fruiting seasons

100%

Shokaeva D.

Journal of Fruit and Ornamental Plant Research

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2004

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tom 12

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nr Spec.ed.2

3

A microsatellite marker based study of chromosomal regions and gene effects on yield and yield components in maize

86%

Mohammadi S. A., Prasanna B. M., Sudan C., Singh N. N.

Cellular and Molecular Biology Letters

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2002

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tom 07

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nr 2A

The genetic basis of different traits and the effect of chromosomal regions on the expression of such traits is the primary interest of this study. In the present investigation, the effect of chromosomal regions on yield and its two primary components was studied, and two genetic parameters, additive effect and degree of dominance, were estimated based on a single-locus model using markers with significant effects on the traits (informative markers). Eight inbred lines from diverse geographical regions of India were crossed in all possible pairs, and F1S were evaluated for the yield and yield components in a replicated trial in two environments. Sequential path analysis was employed to find those yield components showing significant direct effects on yield with negligible multicollinearity. The parental lines were profiled using 56 polymorphic SSR (Simple Sequence Repeat) markers covering 10 chromosomes of maize. Stepwise multiple regression analysis was used to determine the informative markers on yield and its primary components detected through path analysis. Fourteen markers were found to have association with chromosomal regions showing significant effects on the total grain yield, 100-grain weight and total number of kernels per ear. Chromosome 1 with four informative markers revealed the highest genic effects on yield and its components. Markers bnlg594 and bnlg1360 on chromosome 10, and bnlg147 on chromosome 1 revealed the highest additive effects on the total grain yield, 100-grain weight and total number of kernels per ear, respectively. For the analyzed traits, overdominance occurred in all the loci and d/a values, varying from 8.60 for 100-grain weight to 1.40 for total grain yield.

4

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Yield performance of cultivar mixtures of spring triticale

86%

Wesolowski M., Maziarz P., Harasim E.

Acta Agrophysica

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2015

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tom 22

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nr 3

W doświadczeniu z mieszanką zbożową dwóch odmian pszenżyta jarego Gabo i Wanad uwzględniono dwa czynniki: I. Sposób siewu odmian pszenżyta jarego A. siew czysty odmia-ny Wanad, B. siew czysty odmiany Gabo, C–G. – siewy mieszane odmian Wanad i Gabo; II. Sposób pielęgnowania łanu pszenżyta jarego: a) mechaniczny – bronowanie posiewne oraz w fazie szpilkowa-nia i w fazie 4-5 liści pszenżyta jarego, b) mechaniczno-chemiczny – bronowanie posiewne oraz w fazie szpilkowania i w fazie 4-5 liści pszenżyta jarego, a także dodatkowo stosowanie herbicydu, retardanta i fungicydu, c) chemiczny – aplikacja środków ochrony roślin. Siewy mieszane odmian pszenżyta jarego – Wanad i Gabo plonowały istotnie wyżej niż w uprawie jednoodmianowej Najkorzystniej plonowały mieszanki odmian złożone co najmniej w 50% z odmiany Wanad. Łączna uprawa odmian pszenżyta jarego korzystnie wpłynęła na kształtowanie się takich parametrów łanu i kłosa badanej rośliny uprawnej, jak: masa ziaren w kłosie, liczba kłosów na 1 m2 i wyleganie roślin. Plon ziarna pszenżyta jarego istotnie różnicowały również metody pielęgnowania zasiewów. Największy plon ziarna uzyskano na obiekcie pielęgnowanym metodą chemiczną (4,68 t·ha-1), istotnie mniejszy w warunkach pielęgnacji mechanicz-no-chemicznej (4,34 t·ha-1), a najmniejszy w przypadku pielęgnacji mechanicznej (4,11 t·ha-1).

5

Grain yield and yield components of spring barley genotypes as the indicators of their tolerance to temporal drought stress

86%

Pecio A., Wach D.

Polish Journal of Agronomy

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2015

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nr 21

In 2011 year research project on breeding spring barley genotypes tolerant to temporary drought stresses has started. The authors’ responsibility was to test the productivity of genotypes derived from different parental forms obtained in scope of the project for a drought tolerance in pot experiment. In the years 2011–2013 three consequtive series of experiments with approximately seventy genotypes each year have been carried on. Two reference Polish varieties were included into each set. At the control treatment, plants were grown at the optimal soil moisture level of 13–15% weight by weight for the whole vegetation period. Drought stresses were introduced at the tillering stage (BBCH 23) for the period of 11 days or at full fl ag leaf stage (BBCH 45-47) for the period of 14 days. At the both stress treatments, the moisture was maintained at the level of 5–6% weight by weight. Plants were harvested at full maturity stage and the grain and straw yields, and yield components i.e. number of productive tillers, number of grains per spike and weight of 1000 grains were determined. Spring barley showed a higher tolerance to the drought stress at tillering stage than at fl ag leaf stage. Barley genotypes differed in their response to temporary drought stresses due to diverse ability for regenerating after the stress removal. The tolerance of the genotypes to drought stress imposed at tillering stage resulted from their ability to produce additional fertile tillers. The tolerance of the studied spring barley genotypes to temporal drought stress at fl ag leaf stage can be explained by compensation of the reduced grain number per spike through increasing the weight of 1000 grains.

6

Effect of biofertilizers on yield and yield components of cucumber

86%

Isfahani F. M., Besharati H.

Journal of Biology and Earth Sciences

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2012

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tom 02

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nr 2

7

Correlation and path coefficient analysis of yield and yield components in cabbage (Brassica oleracea var. capitata L.)

86%

Kibar B., Karaagac O., Kar H.

Acta Scientiarum Polonorum. Hortorum Cultus

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2014

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tom 13

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nr 6

This research was conducted to determine the interrelationships between yield and some yield components, and direct and indirect effects of such components on yield in cabbage (Brassica oleracea var. capitata L.). The experiment was carried out in a randomized complete block design with three replications using fourteen inbred lines of cabbage in Samsun, Turkey during 2011–2012. Correlation and path coefficient analysis were performed on 11 economic traits such as plant height, plant diameter, width of outer leaf, length of outer leaf, head weight, head diameter, head length, core length, diameter of interior stem, days to maturity and yield. A wide range of variation was observed among the cabbage genotypes for all the traits. It was found that all of the yield components except days to maturity and core length had highly significant and positive correlations with yield. The highest significant positive correlation was obtained between yield and head weight (r = 0.927**). Path coefficient analysis indicated that head weight (0.7139, 56.81%) had the highest positive direct effect on yield followed by head length (0.2265, 23.82%) and plant diameter (0.1907, 16.59%). As a result, head weight, head length, plant diameter, plant height, width of outer leaf, length of outer leaf, head diameter and diameter of interior stem could be effectively used as selection criteria in the breeding programme of cabbage varieties with high yielding, because these traits were the most important yield components affecting yield in cabbage.

8

The effect of the soil tillage methods for forecrop and N-mineral fertilization on the yield of winter triticale (x Triticosecale sp. Wittmack ex A. Camus 1927)

86%

Prusinski J., Borowska M., Majcherczak E.

Agronomy Science

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2022

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tom 77

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nr 3

9

The effects of green manuring under different fertilisation and tillage regimes on yield components and leaf area index in wheat

86%

Peltonen-Sainio P., Poutala R. T.

Fragmenta Agronomica

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1995

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tom 12

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nr 2

10

Resistance in Vicia faba L. accessions to Fusarium species

86%

Zakrzewska E.

Hodowla Roślin, Aklimatyzacja i Nasiennictwo

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1993

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tom 37

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nr 3

11

The effect of winter wheat [Triticum aestivum] plant density on the yield and its components

86%

Bavec M.

Fragmenta Agronomica

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1995

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tom 12

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nr 2

12

The model and canopy architecture of winter wheat depending on sowing time

86%

Mazurek J., Podolska G.

Fragmenta Agronomica

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1995

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tom 12

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nr 2

13

Yield components of double haploids of winter barley [Hordeum vulgare L.] Igri cv.

86%

Kozdoj J., Oleszczuk S., Zimny J.

Polish Journal of Natural Sciences. Supplement

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2003

|

tom 01

14

The effect of sprouting damage on the yield of winter triticale seeds

86%

Mos M., Wojtowicz T.

Acta Agraria et Silvestria. Series Agraria

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2002-2003

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tom 41

During the period of three successive years, in microplot experiments, the effects of sprouting damage of winter triticale seeds on yield, number of spikes, weight of 1,000 seeds and yield of seeds per spike were investigated. The significance of variability sources was determined on the basis of a test carried out according to the mixed model in which years were the random factor and the degrees of sprouting damage and cultivars were the constant factors The results obtained point to a significant decrease in the number of spikes in plants developed from the most sprouted seeds and, in consequence, to a decrease in yield in unfavourable years.

15

The model and canopy architecture of spring wheat depending on sowing density

86%

Mazurek J., Sulek A.

Fragmenta Agronomica

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1995

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tom 12

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nr 2

16

Evaluation of blackcurrant genetic resources for sustainable production

86%

Kampuss K., Strautina S.

Journal of Fruit and Ornamental Plant Research

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2004

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tom 12

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nr Spec.ed.2

17

Evaluation of biological characteristics and productivity of asparagus (Asparagus officinalis L.)

72%

Kmitiene L.

Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura

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2004

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tom 59

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nr 3

18

Effect of saline stress on yield components, growth parameters, carbohydrates, leaf water content and photosynthesis of hull-less barley (Hordeum vulgare L.) cultivars

72%

Bagheri A.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2010

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tom 545

A field experiment was carried out at the Research Station of Eghlid-Azad University Iran in two years (2007 and 2008), based on a randomized complete block design with three replications. Three saline irrigation water treatments: 1 control, 6 and 12 dS·m-1 were arranged as main plots and three hull-less barley cultivar (U46M, GIZA 129 and PV110) were used as subplots. The measured parameters were growth, yield components, glucose, starch and sucrose content, relative water content and photosynthetic parameters in flag leaves. The results indicated that the number of ear and grain per plant were reduced significantly by stress. Grain weight was less sensitive to stress. Biological and grain yields were decreased by stresses. Among the cv. U46M had the lowest and PV110 the highest grain and biological yield. Biological yield differences were related to lower plant height and tillers. The grain yield reduction was related to ear no. per plant and grain no. per ear reductions. Salinity stress caused reduction in starch and increased sucrose contents. There were no significant differences between cultivars in glucose content. There were high negative correlation between sucrose content and grain yield and positive correlation between grain yield and starch content.

19

Evaluation of the yield and some components in the fruit of blue honeysuckle (Lonicera caerulea var. edulis Turcz. Freyn.)

72%

Malodobry M., Bieniasz M., Dziedzic E.

Folia Horticulturae

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2010

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tom 22

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nr 1

20

Effect of mineral fertilization on yield of maize cultivars differing in maturity scale

72%

Barlog P., Frackowiak-Pawlak K.

Acta Scientiarum Polonorum. Agricultura

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2008

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tom 07

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nr 4

Field experiments were conducted in 2005-2007 at the Brody Experimental Station (52°26’ N; 16°17’ E) of the University of Life Sciences in Poznań with the following factors: 1) cultivars with different FAO number: 210, 240 and 260; 2) fertilization with K, Mg and Na: 0 (control), 150 kg K·ha⁻¹, 150 kg K + 16.3 kg Mg·ha⁻¹, 150 kg K + 16.3 kg Mg + 13.5 kg Na·ha⁻¹; 3) Zn application: 0 (control), 1.5 kg Zn·ha⁻¹ after sowing and 1.5 kg Zn·ha⁻¹ at the 3-4 leaf stage. It was found that the grain yield depended more on the course of weather conditions than did plant residues yield. Maize response to potassium fertilization depended on the vegetation season. In the year favorable for the establishment of a high maize yield, simultaneous K and Mg fertilization at rates 150 and 16.3 kg·ha⁻¹ induced a significant grain yield increase. The influence of zinc fertilization on grain yield depended both on the vegetative period and cultivar. Early maturing cultivars responded positively to Zn and the optimal date for Zn foliar application was the 3-4 leaf stage. Maize response to sodium supplementation was not detected.

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