Effect of growth stages and fertility levels on growth, yield and quality of fodder oats (Avena sativa L.)

A field experiment was conducted to evaluate the yield and quality parameters of oats (Avena sativa L.) at forage research farm in Punjab Agricultural University, Ludhiana. Four different nitrogen levels viz. 0 (control), 50, 75 (recommended) and 100 Kg N/ha were applied in the form of urea. Samples were collected at three different growth stages i.e. 30, 45 and 60 DAS. As the growth of plant continued decrease in total nitrogen (45%), non protein nitro-gen (37%), ether extract (13%), ash content (24%) and digestibility (23%) was observed. But increase in free amino acids (48%) and cell wall constituents i.e. ADF (19%), NDF (31%) and CF (34%)with plant’s growth was reported. The interactive effect of varying levels of inorganic fertilizer application on the chemical composition of the plant at various growth stages revealed an increase in total nitrogen (18%), non protein nitrogen (26%), ether extract (18%), free amino acids (32%), ash content (13%) and digestibility (7%) with increase in fertilizer level however ADF (7%), NDF (2%) and CF (3%)content decreased with increased levels of nitrogen fertilization. Correlation studies showed that significant negative correlation was present forin vitro dry matter digestibility with acid detergent fiber (r= -.861**), neutral detergent fiber (r= -.891**) and crude fiber (r= -.740**) at recommended dose of N fertilization. The objective of this study was to investigate the effect of different doses of nitrogen fertilization at different growth stages on quality components in oats fodder.

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EFFECT OF MOLYBDENUM APPLICATIONS ON CONCENTRATIONS OF FREE AMINO ACIDS IN WINTER WHEAT AT DIFFERENT GROWTH STAGES

Journal of Plant Nutrition ◽

10.1081/pln-120005404 ◽

2002 ◽

Vol 25 (7) ◽

pp. 1487-1499 ◽

Cited By ~ 9

Author(s):

Chengxiao Hu ◽

Yunhua Wang ◽

Wenxue Wei

Keyword(s):

Amino Acids ◽

Winter Wheat ◽

Free Amino Acids ◽

Free Amino ◽

Growth Stages ◽

Different Growth Stages

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Protein and free amino acids in field-grown cowpea seeds as affected by water stress at various growth stages

Plant and Soil ◽

10.1007/bf02370036 ◽

1981 ◽

Vol 63 (3) ◽

pp. 355-368 ◽

Cited By ~ 17

Author(s):

C. K. Labanauskas ◽

Peter Shouse ◽

L. H. Stolzy ◽

M. F. Handy

Keyword(s):

Amino Acids ◽

Water Stress ◽

Free Amino Acids ◽

Free Amino ◽

Growth Stages ◽

Cowpea Seeds

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Comparative Analysis of Aqueous Extract of Allergic Food Samples

Asian Journal of Dairy and Food Research ◽

10.18805/ajdfr.dr-1491 ◽

2020 ◽

Author(s):

M. Bhattacharya ◽

N. Mitra

Keyword(s):

Amino Acids ◽

Avena Sativa ◽

Free Amino Acids ◽

Free Amino ◽

Research Work ◽

Total Content ◽

Food Samples ◽

Phytochemical Analysis ◽

Aqueous Extracts ◽

Primary And Secondary Metabolites

Allergy is one of the most common diseases across the globe. Despite several efforts being made, incident of allergy is continuously rising. Among the several causes, food is one of the most important reasons of allergy. In the present study, we used seven allergic food products Arachishypogaea (peanut), Glycine max (soy), Beta vulgaris (beetroot), Avena sativa (oats), Solanummelongena L.(eggplant), Brassica oleracea var. italica (broccoli) and Allium cepa (onion). Phytochemical analysis of aqueous extracts of these seven samples was done in the laboratory. Phytochemical analysis consists of assessment of primary and secondary metabolites. Primary constituents consist of free amino acids, polysaccharides, protein and chlorophyll. The main objective of the research work was to check the total content of polysaccharide and free amino acids in the selected samples.

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Dynamic and migration characteristics of soil free amino acids during the whole growth period of rice after application of milk vetch

10.5194/soil-2021-130 ◽

2021 ◽

Author(s):

Jing Yang ◽

Yi Lin ◽

Christopher Rensing ◽

Liming Zhang ◽

Biqing Zhou ◽

...

Keyword(s):

Amino Acids ◽

Free Amino Acids ◽

Free Amino ◽

Bacterial Biomass ◽

Growth Period ◽

Inhibitory Effect ◽

Growth Stages ◽

Isoleucine Leucine ◽

Total Contribution ◽

And Migration

Abstract. Free amino acids (FAAs) in soil play an important role in the soil nitrogen cycle and plant nutrition. However, the attributing factors and migration characteristics of free amino acid pools in paddy soils after green manure application during the entire growth period of rice have not been elucidated. In this study, a single application of chemical fertilizer (CK) was used as a control under equal nitrogen, phosphorus and potassium conditions, and different application rates of milk vetch (15 000 kghm−2(CL), 30 000 kghm−2(CM) and 45 000 kg hm−2(CH)) were selected to investigate the dynamic of FAAs concentration and composition in paddy soil. Soil FAAs concentration at different growth stages under the same fertilization treatments was highest at the seedling stage and lowest at the tillering stage. The concentration of threonine, alanine, valine, isoleucine, leucine, phenylalanine was most abundant under different fertilization treatments during the growth period, accounting for 59.42 %–76.46 % of the respective FAAs pool. The application of milk vetch was shown to increase the soil FAAs concentration, especially glutamic acid, which increased by 368.17 %–680.78 %, but excessive application had an inhibitory effect. Soil pH, organic matter, protease, bacterial biomass and community were critical factors affecting the concentration of soil FAAs. Bacteroidetes, Firmicutes and Nitrospirae significantly affected the dynamics of FAAs in bacterial communities, and their total contribution rate was 56.89 %. FAAs displayed significant vertical profile characteristics, and the mobility of serine, glycine and proline was high. Conclusively, the application of milk vetch was able to significantly change the concentration and composition of soil FAAs, which may affect the capture of N by plants.

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Free Amino Acids Profile and Expression Analysis of Core Genes Involved in Branched-Chain Amino Acids Metabolism during Fruit Development of Longan (Dimocarpus longan Lour.) Cultivars with Different Aroma Types

Biology ◽

10.3390/biology10080807 ◽

2021 ◽

Vol 10 (8) ◽

pp. 807

Author(s):

Wenshun Hu ◽

Baiyu Wang ◽

Muhammad Moaaz Ali ◽

Xiuping Chen ◽

Jisen Zhang ◽

...

Keyword(s):

Amino Acids ◽

Expression Analysis ◽

Fruit Development ◽

Free Amino Acids ◽

Free Amino ◽

Branched Chain Amino Acids ◽

Malate Synthase ◽

Growth Stages ◽

Branched Chain ◽

Amino Acids Profile

Amino acids are important component of fruit nutrition and quality. In this study, three longan cultivars, including non-aroma types ‘Shixia’ (SX), ‘Lidongben’ (LDB), and strong aroma type ‘Xiangcui’ (XC), were selected to analyze free amino acids (FAAs) variations at six distinct growth stages (S1–S6). The genome-wide identification and expression analysis of genes related to the branched-chain amino acids (BCAA) synthesis pathway were carried out. Results showed that 36 FAAs were identified, and the total FAAs content ranged from 2601.0 to 9073.5 mg/kg, which increased drastically with fruit development until ripening. L-glutamic acid (Glu), L-alanine (Ala), L-arginine (Arg), γ-Aminobutyric acid (GABA), L-aspartic acid (Asp), L-leucine (Leu), hydroxyl-proline (Hypro), and L-serine (Ser) were the predominant FAAs (1619.9–7213.9 mg/kg) in pulp, accounting for 62.28–92.05% of the total amino acids. During the period of rapid fruit expansion (S2–S4), the aroma of XC changed from light to strong, and the contents of L-alanine (Ala) and L-leucine (Leu) were significantly higher than those of SX and LDB. Furthermore, a total of two 2-isopropyl malate synthase (IPMS), two 3-isopropyl malate dehydrogenase (IPMD), and 16 BCAA transferase (BCAT) genes were identified. The expression levels of DilBCAT1, -6, and -9 genes in XC were significantly higher than those in SX and LDB, while DilBCAT16 in XC was lower. The content of Leu was negatively correlated with the expression of DilBCAT1, -6, and -9 in three varieties, but positively correlated with DilBCAT16, indicating that these four genes may be responsible for the different synthesis and degradation of Leu among cultivars.

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