scholarly journals Hybridization and Factors Influencing Seed Set in Oat

2021 ◽  
Author(s):  
Harshavardan J. Hilli ◽  
Rahul Kapoor ◽  
Amandeep .
Keyword(s):  
Seed Set ◽  
Floral Structure ◽  
Damage Rate ◽  
Factors Influencing ◽  
Oat Cultivars ◽  
Hybrid Development ◽  
Neglected Crop

Background: Oat is mostly neglected crop for hybrid development due to its floral structure which results in high damage rate during hybridisation. Due to the cumbersome in acquiring a sufficient number of hybrids and subsequent backcrosses are difficult that lead to lack of much inheritance studies in Oats. Methods: The procedure for crossing used was almost identical to that used by oat breeders which was conducted for 2 years viz., 2019-20 and 2020-21 at Forage Station, Punjab Agriculrural University, Ludhiana. Result: The experiment was conducted to know the seed set percent in oat cultivars. Since the oat flower is fragile compared other cereals and it is easily harmed during the emasculation and pollination process. The seed set percent observed was only 12 and 10 percent in the year 2019-20 and 2020-21, respectively.

Oat β-glucans: An evaluation of eastern Canadian cultivars and unregistered lines

1993 ◽  
Vol 73 (2) ◽  
pp. 429-436 ◽  
Author(s):  
S. S. Miller ◽  
R. G. Fulcher ◽  
D. J. Vincent ◽  
J. Weisz
Keyword(s):  
Content Analysis ◽  
Environmental Factors ◽  
Avena Sativa ◽  
Rank Order ◽  
Positive Association ◽  
Kernel Weight ◽  
Negative Association ◽  
Significant Positive Association ◽  
Factors Influencing ◽  
Oat Cultivars

The (1-3), (1-4)-β-D-glucan (β-glucan) content of a number of domestic Canadian oat cultivars and selected unregistered lines was determined to establish the range of β-glucan content in eastern Canadian oat varieties. Seed samples were taken from oats grown at five locations over 3 years in an attempt to assess the effect of environment on variation in β-glucan content. Analysis of variance indicated that the greater source of variation in β-glucan content was due to genetic rather than environmental factors. The highest β-glucan cultivar (Marion) was about 30% higher than the lowest cultivars (OA516-2 and Donald). Differences in β-glucan content among the intermediate cultivars were generally smaller, and in some cases not significant, although the rank order of the cultivars among environments was consistent. A low, but significant, negative association between β-glucan content and precipitation, and a low, but significant, positive association between β-glucan content and temperature was found, but these were not dominant factors influencing β-glucan levels in oats. There was no consistent association between β-glucan content and protein, oil, thousand kernel weight or grain yield (kg/hectare). Key words: Oat, Avena sativa, β-glucan, variation

Some pollinators are more equal than others: Factors influencing pollen loads and seed set capacity of two actively and passively pollinating fig wasps

2014 ◽  
Vol 57 ◽  
pp. 73-79 ◽  
Author(s):  
Finn Kjellberg ◽  
Nazia Suleman ◽  
Shazia Raja ◽  
Abelouahad Tayou ◽  
Martine Hossaert-McKey ◽  
...  
Keyword(s):  
Seed Set ◽  
Fig Wasps ◽  
Pollen Loads ◽  
Factors Influencing

COMPARISON OF THE CROSSABILITY OF RYE (SECALE CEREALE) AND HORDEUM BULBOSUM ONTO WHEAT (TRITICUM AESTIVUM)

1981 ◽  
Vol 23 (1) ◽  
pp. 81-88 ◽  
Author(s):  
D. E. Falk ◽  
K. J. Kasha
Keyword(s):  
Triticum Aestivum ◽  
Secale Cereale ◽  
Seed Set ◽  
Genetic System ◽  
Triticum Aestivum L ◽  
Hordeum Bulbosum ◽  
Factors Influencing ◽  
Main System ◽  
Wheat Lines ◽  
System Operating

Fifty-six wheat (Triticum aestivum L.) lines representing a wide diversity of germplasm were screened for crossability with rye. Seed set values ranged from 0.0% to 95.4% of the florets pollinated. Twenty-eight of these wheat lines representing the range of crossability with rye were then pollinated with tetraploid Hardeum bulbosum L. Seed set ranged from 0.0% to 32.2%. Those wheats giving seed set with H. bulbosum generally had medium to high crossability with rye. A high correlation (r = 0.75) was obtained for crossability of rye and H. bulbosum on wheat, indicating that the main genetic system (Kr1 and Kr2) governing crossability with rye is also the main system operating in crosses with H. bulbosum. Evidence for additional factors influencing crossability and for differences between rye and H. bulbosum is provided. Hybrids between wheats having different crossability levels exhibited intermediate crossability levels with rye but very low crossability with H. bulbosum. Hordeum bulbosum genotypes differ in their ability to effect seed set.

scholarly journals Oat Floral Biology and Factors Affecting Seed Set

2021 ◽  
Author(s):  
Harshavardan J. Hilli ◽  
Rahul Kapoor ◽  
Amandeep .
Keyword(s):  
Seed Set ◽  
Floral Biology ◽  
Effect Of Temperature ◽  
Eastern Region ◽  
Rabi Season ◽  
Floral Structure ◽  
Factors Affecting ◽  
Avena Nuda ◽  
Cultivated Species ◽  
North Western

In India, oat is grown as fodder crop during Rabi season in north-western and central parts of the country and is now even extending to eastern region as well. The only commercially cultivated species in the genus Avena are Avena sativa, Avena nuda and Avena byzantine. Oat flowers are bit delicate when compared to other cereal floral structure and seed set is influenced by many factors during artificial hybridisation. This paper includes about floral biology of oat crop and also the various factors responsible for seed set during hybridisation viz effect of Interval Between Emasculation and Pollination, effect of temperature for seed set and any Injury to floral Parts during hybridisation.

Factors Influencing Seed Set of Oat Crosses 1

1956 ◽  
Vol 48 (4) ◽  
pp. 173-177 ◽  
Author(s):  
Charles M. Brown ◽  
H. L. Shands
Keyword(s):  
Seed Set ◽  
Factors Influencing

Factors influencing adhesive bonding at the bone/implant interface

1992 ◽  
Vol 50 (2) ◽  
pp. 1114-1115
Author(s):  
Julie A. Martini ◽  
Robert H. Doremus
Keyword(s):  
Electron Microscopy ◽  
Adhesive Bonding ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Bone Implant ◽  
Factors Influencing ◽  
Lr White ◽  
Transmission Electron ◽  
New Zealand White Rabbits ◽  
Scanning Electron

Tracy and Doremus have demonstrated chemical bonding between bone and hydroxylapatite with transmission electron microscopy. Now researchers ponder how to improve upon this bond in turn improving the life expectancy and biocompatibility of implantable orthopedic devices.This report focuses on a study of the- chemical influences on the interfacial integrity and strength. Pure hydroxylapatite (HAP), magnesium doped HAP, strontium doped HAP, bioglass and medical grade titanium cylinders were implanted into the tibial cortices of New Zealand white rabbits. After 12 weeks, the implants were retrieved for a scanning electron microscopy study coupled with energy dispersive spectroscopy.Following sacrifice and careful retrieval, the samples were dehydrated through a graduated series starting with 50% ethanol and continuing through 60, 70, 80, 90, 95, and 100% ethanol over a period of two days. The samples were embedded in LR White. Again a graduated series was used with solutions of 50, 75 and 100% LR White diluted in ethanol.

Factors Influencing Electrophysiologic Responsivity in Normal Adults

1965 ◽  
Vol 8 (4) ◽  
pp. 323-347
Author(s):  
Robert Goldstein ◽  
Benjamin RosenblÜt
Keyword(s):  
Conditioned Stimulus ◽  
White Light ◽  
Pure Tone ◽  
Alpha Rhythm ◽  
White Women ◽  
White Men ◽  
Inverse Relation ◽  
Factors Influencing ◽  
Electrodermal Responses ◽  
Normal Adults

Electrodermal and electroencephalic responsivity to sound and to light was studied in 96 normal-hearing adults in three separate sessions. The subjects were subdivided into equal groups of white men, white women, colored men, and colored women. A 1 000 cps pure tone was the conditioned stimulus in two sessions and white light was used in a third session. Heat was the unconditioned stimulus in all sessions. Previously, an inverse relation had been found in white men between the prominence of alpha rhythm in the EEG and the ease with which electrodermal responses could be elicited. This relation did not hold true for white women. The main purpose of the present study was to answer the following questions: (1) are the previous findings on white subjects applicable to colored subjects? (2) are subjects who are most (or least) responsive electrophysiologically on one day equally responsive (or unresponsive) on another day? and (3) are subjects who are most (or least) responsive to sound equally responsive (or unresponsive) to light? In general, each question was answered affirmatively. Other factors influencing responsivity were also studied.

Factors Influencing Pressure in the Portal Vein as Studied in the Intact Animal

1950 ◽  
Vol 16 (1) ◽  
pp. 194-210 ◽  
Author(s):  
Frederick W. Hoffbauer ◽  
Jesse L. Bollman ◽  
John L. Grindlay
Keyword(s):  
Portal Vein ◽  
Intact Animal ◽  
Factors Influencing
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