Turkish Journal of Field Crops

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THE DETERMINATION OF LEAF ANATOMY, YIELD AND QUALITY CHARACTERISTICS IN F1 AND F2 GENERATIONS OF INTERSPECIFIC COTTON HYBRIDS (Gossypium hirsutum L. x Gossypium barbadense L.)

Aydın UNAY, Dilara ALTINTAS, Mehmet COBAN

Abstract

The breeding between Gossypium hirsutum L. and Gossypium barbadense L. purpose to increase yield and enhance fiber quality. The cross populations between four hirsutum varieties, Darmi, Helius, LT 4 and LT 64 and barbadense variety, Avesto, were used as material. Interspecific F1 and F2 populations were evaluated in terms of heterosis, useful heterosis and F2 depression for yield, quality parameters and physiological characteristics such as stomatal density and parenchyma thickness in cross section of leaf. All observed characters resulted negative heterotic effects except fiber length and strength. Inbreeding depression for seed cotton yield was highly negative in all hybrid combinations. The differences among genotypes for stomatal density and parenchyma thickness were found to be significant. The significant correlations showed that an increase in stomatal density resulted in an increasing of fiber length and strength, whereas in a decreasing of ginning out turn and fiber fineness. It should be concluded that stomatal density can be used as selection criteria in early generations of interspecific cotton breeding.

Keyword: Cotton, F2 depression, heterosis, parenchyma thickness, stomatal density ,
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Effects of Different Water Stress Levels on Biomass Yield and Agronomic Traits of Switchgrass (Panicum virgatum L.) Varieties under Semi-Arid Conditio

Erdal GONULAL, Suleyman SOYLU, Mehmet SAHIN

Abstract

A field experiment was conducted in the Wielkopolska region at the Gorzyń Research Station, Poland (52.34°N, 15.54°E) in Central Europe. The study was conducted over a 3-year period (2017, 2018, 2019) as a two-factorial design with four replications in the RCBD. The aim of the research was to determine the effect of the cultivar (‘Bolero’, ‘Tytan’) and the inoculation (Nitragina–seeds inoculation, Nitroflora I–seeds inoculation, Nitroflora II–soil inoculation, HiStick® Lupin–seeds inoculation) on plant development, seeds chemical composition and yielding of narrow-leaved lupin. The weather conditions and experimental factors significantly influenced on productivity of narrow-leaved lupin ‘Tytan’. Drought during the growing season reduced seeds and protein yields. After inoculation of HiStck the seeds yield was significantly greater by 12.4% (p < 0.01) and the protein yield after application of Nitroflora I or HiStick by 13.9% (p < 0.01) and 19.2% (p < 0.01), respectively. Correlation coefficients showed strong relations between number of pods and seeds per plant in both cultivars regardless of the inoculation variant, however the strongest relations in both cultivar were proved on HiStick treatment.
Keyword: Biological nitrogen fixation, chemical composition, legumes, protein efficiency, yielding
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