Turkish Journal of Field Crops

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ORTHOGONAL REGRESSIONS OF PEA (Pisum L.) VARIETIES

Valentin KOSEV, Viliana VASILEVA, Alpaslan KUSVURAN

Abstract

The study was conducted in 2014-2016 on the experimental field of the Institute of Forage Crops, Pleven, Bulgaria. The plant material from the aboveground and root mass of seven forage peas (Pisum L.) genotypes and varieties, i.e. X07P54, X06PWY, NDPO80138-B-2, CA1P, L020140, Wt6803 and Mir was analyzed. The ecological and genetic model for the organization of the quantitative trait and the method of the orthogonal regressions as a method of study and evaluation were applied. The highest and stable yield of fresh root mass was obtained at Wt6803 (12.9 kg ha-1 ), NDPO80138-B-2 (10.9 kg ha-1 ) and L020140 (7.24 kg ha-1 ). X07P54, X06PWY and CA1P were low productive (6.4 to 9.1 kg ha-1 ) and highly resistant to this signs. Stable green mass yields were Wt6803 (388 kg ha-1 ) and Mir (376 kg ha-1 ) ranked respectively with 1 and 2 rank. Plants from Wt6803 and Mir were shown good results on the modules productivity of fresh aboveground and root mass, and from NDPO80138-B-2 by nodule weight and fresh root mass weight per plant. The varieties Wt6803, Mir and L020140 are of interest to the selection due to the successful balance of physiological systems - attraction and adaptability to the weight of the fresh aboveground and root mass. They can be included in hybridization programs to obtain high-yield genotypes for these signs.

Keyword: Adaptability, Attraction, Module, Pisum sativum L., Phenotype, Sign ,
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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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