Seed yield, oil content and fatty acid composition of Oenothera biennis L. affected by harvest date and harvest method

2007 ◽  
Vol 25 (3) ◽  
pp. 274-281 ◽  
Author(s):  
Azim Ghasemnezhad ◽  
Bernd Honermeier
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Seed Yield ◽  
Oil Content ◽  
Harvest Date ◽  
Oenothera Biennis ◽  
Harvest Method

Heritability of seed yield, oil concentration and oil quality among wild biotypes of Ontario evening primrose

1993 ◽  
Vol 73 (4) ◽  
pp. 1067-1070
Author(s):  
J. E. Brandle ◽  
W. A. Court ◽  
R. C. Roy
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Seed Yield ◽  
Oil Content ◽  
Oil Quality ◽  
Research Station ◽  
Oenothera Biennis ◽  
Evening Primrose ◽  
Starting Point

Evening primrose (Oenothera biennis L.) is a wild species native to Eastern-North America that has recently come under cultivation as an oilseed. The oil is primarily used as a treatment for skin disorders. As a starting point for genetic improvement and domestication of this species, it was thought essential to first characterize genetic variability in Ontario evening primrose, so that members of this population may be drawn upon as a resource during cultivar development. Thirty-six wild evening primrose biotypes were evaluated in replicated trials conducted at the Delhi Research Station during 1988–1990. Seed yield, oil content and the concentration of individual fatty acids were measured. Heritability estimates demonstrated the presence of heritable genetic variation for all characters measured except the C16:1 (n–9) fatty acid. Selection for yield, oil content or fatty acid composition amongst the wild bio-types should therefore be effective. Key words: Oenothera biennis, gamma-linolenic acid, GLA, oil, fatty acid composition

scholarly journals Changes in N, K, and Fatty Acid Composition of Black Cumin Seeds Affected by Nitrogen Doses under Supplemental Potassium Application

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Zehra Aytac ◽  
Nurdilek Gulmezoglu ◽  
Tugce Saglam ◽  
Engin Gokhan Kulan ◽  
Ugur Selengil ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Seed Yield ◽  
Oil Content ◽  
Saturated Fatty Acids ◽  
Oil Yield ◽  
Black Cumin ◽  
Potassium Application

This study was carried out to determine the efficiency of nitrogen (N) doses (0, 30, 60, and 90 kg N ha−1) under supplemental potassium (K) application (50 kg K2O ha−1) on black cumin in 2011 and 2012. The results showed that increased N levels resulted in increasing seed yield and N and K contents in seed, while oil content decreased. The seed yield and oil yield were peaked at the doses of 60 kg N ha−1and 50 kg K ha−1. An increase in N doses caused a reduction in oil content regardless of K supply. Saturated fatty acids and oleic acid were slightly increased by K application, while minor changes in linoleic acid were detected. It was concluded that 60 kg N ha−1with supplemental K application should be advised for enhancement in seed yield, oil yield, and N and K contents in seeds of black cumin without significant changes in fatty acid composition.

Efficacy of Ridomil MZ and protectant fungicides to control white rust (Albugo candida) and their effect on seed yield, oil content and fatty acid composition in mustard

2000 ◽  
Vol 40 (5) ◽  
pp. 699 ◽  
Author(s):  
Ravjit K. Khangura ◽  
S. S. Sokhi
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Seed Yield ◽  
Oil Content ◽  
Foliar Application ◽  
Aqueous Suspension ◽  
Albugo Candida ◽  
White Rust ◽  
Geographical Locations

Ridomil MZ alone or Ridomil MZ followed by protectant fungicides was tested to manage white rust (Albugo candida) (Pers. ex Lev.) Kuntze on Brassica juncea L. var. RL-1359, sown at the normal time in 1989–90 and 1990–91 and under delayed sown conditions in 1990–91 at 2 different geographical locations of the Punjab state. Two spray applications of aqueous suspension of Ridomil MZ at 450 g a.i./ha or 1 foliar application of Ridomil MZ at 450 g a.i./ha, followed by another spray of Dithane M-45 at 600 g a.i./ha or Blitox-50 at 375 g a.i./ha at 15- or 20-day interval to a 70-day-old crop significantly reduced both foliage and floral infections. These treatments significantly increased the seed yield over control and other treatment combinations, without having an adverse affect on the oil content and fatty acid composition of the oil. The same fungicide regime was effective to control white rust when applied to a 50- or 60-day-old crop under delayed sown conditions. The seeds harvested from the plots treated twice with Ridomil MZ exhibited no detectable residue of metalaxyl and mancozeb. The timing of application of these fungicides may be critical in the control of white rust, particularly in the late sown crop.

scholarly journals Evaluation of Gamma-linolenic Acid Composition of Evening Primrose (Oenothera) Species Native to Texas

HortScience ◽  
2003 ◽  
Vol 38 (4) ◽  
pp. 595-598 ◽  
Author(s):  
S.A. Balch ◽  
C.B. McKenney ◽  
D.L. Auld
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Oil Content ◽  
Field Experiments ◽  
Commercial Production ◽  
Oenothera Biennis ◽  
Evening Primrose ◽  
Pharmaceutical Application ◽  
Seed Yields

The oil of evening primrose (Oenothera sp.) is an important source of gammalinolenic acid (GLA). GLA [C18:3Δ6,9,12] is an unsaturated fatty acid in demand for its nutritional and pharmaceutical application. Oenothera biennis L. is the primary commercial source of evening primrose oil. A study was conducted to determine if species of Oenothera, adapted to Texas, produce GLA levels comparable to O. biennis. This project identified and evaluated the fatty acid composition of eight species of evening primrose native to Texas. GLA levels of 54 accessions evaluated from collected seed ranged from 0.0% to 11.0%. Field experiments were then conducted to determine oil content, fatty acid composition, seed yield, and potential adaptation to commercial production of selected accessions. Mean GLA levels of cultivated seed from these accessions ranged from 0.0% to 10.1%. Mean seed oil content ranged from 7.3% to 21.7%. Of the species examined, O. elata subsp. hirsutissima (A. Gray ex S. Watson) W. Dietrich and O. jamesii (Torrey & Gray) demonstrated GLA levels and seed yields adequate for commercial production. Based on these results, O. elata subsp. hirsutissima and O. jamesii demonstrated sufficiently high GLA levels, oil content, and seed yields to be considered for commercial production.

scholarly journals Oil content and fatty acid composition of soybean (Glysine max L.) genotypes evaluated under rainfed conditions of Kashmir Himalayas in India

2015 ◽  
Vol 7 (2) ◽  
pp. 910-915 ◽  
Author(s):  
Sheikh Mohammad Sultan ◽  
Nilamani Dikshit ◽  
Umesh J. Vaidya
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Seed Yield ◽  
Oil Content ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Kashmir Himalayas ◽  
Rainfed Conditions

Soybean (Glycine max), a multipurpose crop with much appreciated nutritional and functional properties, has generated a lot of interest during last few decades for improving its cultivation and characteristics. Besides having a great potential of energy-protein malnutrition eradication, it can contribute greatly to edible oil pool in the region. This study investigates some agro-morphological characters, besides seed oil content and fatty acid composition of two local soybean genotypes labeled as S/D-18 and S/D-22 grown under rainfed conditions of Kashmir Himalayas in India. The genotype S/D-22 matured earlier than that of S/D-18. Seed yield/plant of 18.5 g (S/D-18) and 20.1g (S/D-22) was recorded in these genotypes with 100-seed weight of 14.3 g and 14.7 g respectively. Seeds of genotype S/D-18 yielded an oil content of 19.54% while in genotype S/D-22 oil content of 19.74% was recorded. Fatty acids of myristic, palmitic, stearic, oleic, linoleic and linoleinic were detected and quantified in the oil extracted from the seeds of these genotypes. Saturated fatty acids constituted 11.88%(S/D-18) and 11.42%(S/D-22) while unsaturated fatty acids constituted 88.12% (S/D-18) and 88.58% (S/D-22) of the oil. The study has thus, revealed that under dry land conditions, although soybean seed yield/plant is lesser, percentage oil content and fatty acid composition essentially remained unaltered and that significant differences can occur in individual fatty acid contents between genotypes.

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