scholarly journals The Effect of Age and Drought on the Recovery of Midday Leaf Hydraulics and Physiological Traits in Oat (Avena nuda)

2021 ◽  
Vol 25 (03) ◽  
pp. 581-590
Author(s):  
Huma Batool
Keyword(s):  
Stomatal Density ◽  
Crop Breeding ◽  
Naked Oat ◽  
Water Capacity ◽  
Leaf Hydraulics ◽  
Species Survival ◽  
Avena Nuda ◽  
Rainout Shelter ◽  
Oat Cultivars ◽  
Effect Of Age

The leaf hydraulic behavior has a significant role on species survival because plants often encounter drought. The effect of age and drought on the leaf water potential (ѰL), leaf hydraulic conductance (KL), stomatal density (SD) and size (SS), evapotranspiration (E), net photosynthetic rate (Pn) stomatal conductance (gs) and their post drought recovery in naked oat is not understood. This study investigated these facts in two naked oat cultivars, Yanmai (Ym) and Dingyou7 (Dy7). The plants were grown in pots and kept well-watered (WW) for the first ~30 days after sowing (DAS) after that for Experiment 1) the plants were kept in a rainout shelter; in a growth room and kept WW throughout. Experiment 2) the plants were grown at 40% drought to determine the effect of drought on the SD and SS. Experiment 3) the plants were grown in 40% field water capacity (FC) for ~25 days then, they were recovered from drought stress and ѰL, KL, SS, SD, E, Pn, and gs were determined. Under the drought, Ym lost KL whereas; Dy7 could maintain KL and higher midday ѰL and lower SD than Ym. The cultivar Dy7 showed maximum recovery of KL, ѰL, Pn, gs and E than Ym upon re-watering. The loss and recovery of KL, ѰL, Pn, E, gs and SD is controlled genetically in naked oat cultivars in combination with the environmental factors and the cultivar Dy7 has potential to enhance drought resistance in crops plants by genetic crop breeding. © 2021 Friends Science Publishers

scholarly journals Nutritional properties of various oat and naked oat cultivars

2018 ◽  
Vol 69 (4) ◽  
pp. 215-226 ◽  
Author(s):  
Theresa Boeck ◽  
Stefano D’Amico ◽  
Elisabeth Zechner ◽  
Henry Jaeger ◽  
Regine Schoenlechner
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Total Protein Content ◽  
Total Phenolic Compounds ◽  
Frap Assay ◽  
Naked Oat ◽  
Avena Nuda ◽  
Oat Cultivars

SummaryTwo oat (Avena sativaL.) and ten naked oat (Avena nudaL.) cultivars grown on an experimental farm in two consecutive years were analyzed for their content of β-glucan, ash, fat, protein and Osborne protein fractions. Concentration of the antioxidant substances avenanthramides, tocopherols, tocotrienols and total phenolic compounds was analyzed. The antioxidant capacity of the oat cultivars was studied by ABTS•+-scavenging assay and FRAP assay. Cultivar Vazec and conservation cultivar Klimt showed high contents of fat, avenanthramides and total phenolic compounds, as well as a high antioxidant capacity. Klimt also had a high total protein content, and the highest proportion of avenanthramide 2c, which has the highest antioxidant activity of the analyzed avenanthramides. On the other hand, Klimt was also relatively low in β-glucan and tocopherols and tocotrienols. The two cultivars of husked oat, Effektiv and Max, have high yields and low prolamin contents, but showed poor results in all analyzed antioxidant parameters. Comparison of the two cultivation periods showed large differences in many of the analyzed parameters. The hot, dry climate of 2015 had negative influences on the nutritional quality of the oat, especially concerning the antioxidant properties. No cultivar could be identified that was robust against these climatic influences.

Growth Characteristics, Seed and Forage Productivity of New Naked Oat (Avena nuda L.) Cultivar “Jungmo2005”

2017 ◽  
Vol 37 (1) ◽  
pp. 28-34
Author(s):  
Ouk-Kyu Han ◽  
◽  
Tae-Il Park ◽  
Hyung-Ho Park ◽  
Ki-Hun Park ◽  
...  
Keyword(s):  
Growth Characteristics ◽  
Naked Oat ◽  
Avena Nuda

scholarly journals Genetic Similarity Assessment among Selected Naked Oat Cultivars and Breeding Lines Using ISSR Markers

2014 ◽  
Vol 42 (1) ◽  
Author(s):  
Edyta PACZOS-GRZEDA ◽  
Piotr Tomasz BEDNAREK ◽  
Aneta KOROLUK ◽  
Zygmunt NITA ◽  
Zofia BANASZAK ◽  
...  
Keyword(s):  
Genetic Similarity ◽  
Issr Markers ◽  
Breeding Lines ◽  
Naked Oat ◽  
Similarity Assessment ◽  
Oat Cultivars

Non-starch constituents influence the in vitro digestibility of naked oat (Avena nuda L.) starch

2019 ◽  
Vol 297 ◽  
pp. 124953 ◽  
Author(s):  
Minyue Tang ◽  
Luyu Wang ◽  
Xuanxuan Cheng ◽  
Yanwen Wu ◽  
Jie Ouyang
Keyword(s):  
In Vitro Digestibility ◽  
Naked Oat ◽  
Avena Nuda

Effect of natural selenium-enriched rice flour addition on product properties of fresh extruded rice-shaped kernels (FER) based on naked oat (Avena nuda L.)

2021 ◽  
Vol 27 (1) ◽  
pp. 85-94
Author(s):  
Xiaodong Wang ◽  
Zhiyong Zhao ◽  
Xihong Li ◽  
Jianxin Song ◽  
Zhenyuan Liu ◽  
...  
Keyword(s):  
Rice Flour ◽  
Naked Oat ◽  
Avena Nuda

scholarly journals A comparison of husked and naked oats under Irish conditions

2018 ◽  
Vol 57 (1) ◽  
pp. 1-8 ◽  
Author(s):  
R. Hackett
Keyword(s):  
Grain Yield ◽  
Avena Sativa ◽  
Grain Quality ◽  
Nutritive Value ◽  
Field Experiments ◽  
Naked Oat ◽  
Oat Cultivars ◽  
Naked Oats ◽  
Kernel Yield

AbstractDuring the harvesting of husked oats (Avena sativa L.), the kernel remains tightly enclosed by a lignified lemma and palea, collectively termed the husk or hull. In naked oats, which are the same species as husked oats, the lemma is much less lignified and the kernel threshes free during harvesting. The absence of the largely indigestible husk increases the nutritive value of naked oats compared to that of husked oats, particularly for non-ruminants and poultry. There is little information regarding the potential of naked oats as an arable crop in Ireland. The objective of this study was to determine the productivity of naked oats under Irish conditions. Field experiments were carried out in the south east of Ireland to compare the grain yield and grain quality of both autumn-sown and spring-sown naked and husked oat cultivars. Grain yield of naked oat cultivars was significantly lower than that of husked oat cultivars, irrespective of whether they were autumn sown or spring sown. However, when the kernel yield of husked oat cultivars was estimated, differences in yield between the two types were much smaller, and in some cases, kernel yield of naked oat cultivars exceeded that of husked oat cultivars. Grain quality, as indicated by hectolitre weight and grain N concentration, was generally greater for naked oat cultivars than for husked oat cultivars. It is concluded that under Irish conditions, naked oats have the potential to produce kernel yields equivalent to husked oats. The grain produced is of high quality and may be particularly suited for the nutrition of non-ruminants.

Trichome numbers in naked-oat cultivars

2008 ◽  
Vol 147 (1) ◽  
pp. 63-69 ◽  
Author(s):  
A.-M. KIRKKARI ◽  
P. PELTONEN-SAINIO ◽  
L. JAUHIAINEN
Keyword(s):  
Grain Weight ◽  
Test Weight ◽  
Cultivar Differences ◽  
Fine Dust ◽  
Naked Oat ◽  
Combine Harvester ◽  
Oat Cultivars

SUMMARYThe oat kernel, caryopsis or groat, is generally covered with fine silky hairs termed trichomes. The trichomes of naked oat are partly lost during threshing and handling of grains when the lemma and palea are removed and the surface of the grain is exposed. Trichomes can cause itchiness and more serious reactions in those handling the grains. Trichomes also accumulate and form fine dust and can block up machinery. Trichomes are clearly problematic and growers of naked oat are eager to have oat cultivars with reduced numbers of trichomes. Experiments compared the differences in trichome numbers of naked-oat cultivars and threshing settings. The cultivars differed considerably in pubescence. Cultivars Lisbeth and NK 00117 had most trichomes and cv. Bullion the fewest. Completely bare or polished grains were not observed. Pubescence was not associated with grain weight or test weight. However, grains from the lowermost spikelets of the panicle had fewer trichomes than those from the uppermost spikelets. For cv. Bullion, some threshing settings, including increased cylinder speed, slightly increased grain polishing such that grains had some areas completely free of trichomes. Reduction of the concave clearance in the combine harvester had a similar effect. However, threshing settings did not affect the trichomes of cv. Lisbeth. Adjusting threshing machinery settings was generally not an efficient means of solving the problems associated with naked-oat trichomes, but cultivar differences existed and further efforts in breeding to reduce trichome numbers are required.

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