Oil content of cotton seed in Northern Nigeria: 2. varietal and environmental variation

1977 ◽  
Vol 88 (3) ◽  
pp. 731-736 ◽  
Author(s):  
H. E. Gridley ◽  
J. B. Smithson
Keyword(s):  
Seed Size ◽  
Cotton Seed ◽  
Oil Content ◽  
Environmental Variation ◽  
Northern Nigeria ◽  
The North ◽  
Oil Percentage ◽  
Small Interactions ◽  
Insect Attack

SUMMARYDifferences between sites accounted for a large proportion of the variation in the oil percentage of cotton seed from variety and agronomic trials conducted in Northern Nigeria but were not consistent between seasons. Reduced oil percentages from the drier areas of the north and from later sowings suggested that length of season is an important factor but insect attack and differences in the amounts of nitrogen, potash and boron applied to the soil also contributed to the variation. Application of insecticide, potash and boron increased and nitrogen decreased oil percentages. The latter effect usually resulted from an increase in seed size without a corresponding increase in oil content. The variation in the oil percentages of commercial varieties derived from the same Nigerian Allen stock and the relatively small interactions between varieties and environments suggested that this character might be improved by selection.

Oil content of cotton seed in Northern Nigeria: 1. Assessment of nuclear magnetic resonance for the determination of the oil percentage of cotton seed

1977 ◽  
Vol 88 (3) ◽  
pp. 727-729 ◽  
Author(s):  
J. B. Smithson ◽  
H. E. Gridley
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Cotton Seed ◽  
Oil Content ◽  
Northern Nigeria ◽  
Local Varieties ◽  
Oil Percentage ◽  
Conventional Solvent Extraction ◽  
Nuclear Magnetic

SUMMARYThe oil content of a number of introduced and local varieties was determined using three nuclear magnetic resonance oil analysers at different centres and compared with results from conventional solvent extraction. Differences were evident between the three centres and between the techniques but in both cases the rankings were similar.

Effects of seed size on oil content and Seedling Emergence in Safflower (Carthamus Tinctorius L.) Grown in the Sudan

1966 ◽  
Vol 2 (4) ◽  
pp. 299-304 ◽  
Author(s):  
E. A. K. El Saeed
Keyword(s):  
Field Experiment ◽  
Seed Size ◽  
Inverse Relationship ◽  
Oil Content ◽  
Seedling Emergence ◽  
Carthamus Tinctorius ◽  
Pot Experiment ◽  
Early Emergence ◽  
Oil Percentage

SummaryAn investigation was carried out in 1964 to determine the effect of seed size on oil content and seedling emergence in safflower (Carthamus tinctorius L.). Small, medium and large seeds yielded 37·0, 36·6 and 35·7 per cent oil respectively, and this inverse relationship between seed size and oil percentage (r = −0·9635) was attributed to the increase in proportion of hull in large seeds. In a pot experiment, plants from large seeds emerged earlier than those from small seeds when sown at both 1 and 3 inches depth. Further, plants from large seeds had greater dry weights and leaf areas than the others. The same sort of correlation was also obtained between seed size and early emergence in a field experiment using small, medium and large seeds.

scholarly journals Response of oil and protein content to seed size in cotton(Gossypium hirsutum L., cv. Sahel)

2009 ◽  
Vol 59 (1) ◽  
pp. 53-64 ◽  
Author(s):  
M. Pahlavani ◽  
A. Miri ◽  
G. Kazemi
Keyword(s):  
Gossypium Hirsutum ◽  
Protein Content ◽  
Seed Size ◽  
Cotton Seed ◽  
Seed Weight ◽  
Genetic Improvement ◽  
Oil Content ◽  
Heritable Variation ◽  
Gossypium Hirsutum L ◽  
Strong Linear Relationship

Response of oil and protein content to seed size in cotton(Gossypium hirsutum L., cv. Sahel) This study was designed to identify the response of oil and protein content to non-heritable variation of seed size in cotton (Gossypium hirsutum L.). The experiment was conducted at Gorgan University of Agricultural Sciences, Gorgan, Iran in 2005. The results showed that germination and emergence increased linearity with seed size and R2 of these relationships were 92 and 89%, respectively. This means that larger seed had higher potential of germination and emergence. Also, there was a strong linear relationship between seed weight and oil content. Seed weight provided a better indication of oil content (R2=0.78) than protein content (R2=0.43). There are no considerable relationship between seed size and protein content of seed. The results of this study also showed a positive and significant correlation between seed weight and oil content (r=0.88**), germination percent (r=0.95**), germination index (r=0.84*), emergence percent (r=0.94**), and emergence index (r=0.88**). This results suggest that oil content, germination and emergence of cotton seed was largely affected by size of seeds. The effects of seed size where studied here are pure effects of size and is not confounded by other effects such as genotypic factors. This finding helps cotton breeders for the genetic improvement of germination and emergence along with oil and protein content of seeds.

Traditionalism and politics: A case study of Northern Nigeria

1967 ◽  
Vol 2 (4) ◽  
pp. 509-524 ◽  
Author(s):  
B. J. O. Dudley
Keyword(s):  
Social Change ◽  
Local Government ◽  
Status Quo ◽  
Political Elite ◽  
High Time ◽  
The Political ◽  
Northern Nigeria ◽  
The North ◽  
The Right

In the debate on the Native Authority (Amendment) Law of 1955, the late Premier of the North, Sir Ahmadu Bello, Sardauna of Sokoto, replying to the demand that ‘it is high time in the development of local government systems in this Region that obsolete and undemocratic ways of appointing Emirs’ Councils should close’, commented that ‘the right traditions that we have gone away from are the cutting off of the hands of thieves, and that has caused a lot of thieving in this country. Why should we not be cutting (off) the hands of thieves in order to reduce thieving? That is logical and it is lawful in our tradition and custom here.’ This could be read as a defence against social change, a recrudescence of ‘barbarism’ after the inroads of pax Britannica, and a plea for the retention of the status quo and the entrenched privilege of the political elite.

Variability Studies and Breeding for Increased Oil Content in Rapeseed and Mustard

1979 ◽  
Vol 15 (1) ◽  
pp. 65-71
Author(s):  
A. N. Asthana ◽  
S. D. Dube ◽  
P. N. Tiwari ◽  
P. N. Gambhir ◽  
T. S. Rajan
Keyword(s):  
Brassica Juncea ◽  
Oil Content ◽  
Positive Trend ◽  
Selection Methods ◽  
Single Plant ◽  
Oil Percentage ◽  
Maximum Increment ◽  
Nuclear Magnetic

SUMMARYOil content (percentage) was determined by pulsed nuclear magnetic spectrometry to study its variability in rai (Brassica juncea) and yellow sarson (B. campestris). Wide inter-varietal and intra-varietal variability was observed in both crops. Genetic aspects of oil content were also worked out, and single-plant and bulk selection methods used for 3 years to exploit the intra-varietal variability. A positive trend in the improvement of oil percentage was observed in 27 out of 30 varieties, some of which showed significant improvements over their respective unselected stocks. A maximum increment of 7% was observed in variety BR 40 of rai and 6% in variety YSM of yellow sarson.

“Opting Out”: An Experiment with Jurisdiction in Northern Nigeria

1964 ◽  
Vol 8 (1) ◽  
pp. 20-28
Author(s):  
S. S. Richardson
Keyword(s):  
African State ◽  
Northern Region ◽  
Regional Government ◽  
Northern Nigeria ◽  
Legal Systems ◽  
Opting Out ◽  
Strong Case ◽  
The North ◽  
History Of ◽  
The Government

With the commencement of the Native Courts (Amendment) Law, 1961, the Government of the Northern Region of Nigeria abolished “opting out”, an experiment with jurisdiction which must surely be unique within the history of modern legal systems and therefore worthy of recording before the facts are obscured and lest any other African state, faced with similar difficulties, is tempted to adopt this expedient as a temporary palliative to meet a similar situation. It is all the more desirable to publish the facts since the strong case for abolition presented by the Northern Regional Government is in danger of being lost by default. On 14th October, 1961, the Daily Service in Nigeria published a bitter attack on the Native Courts (Amendment) Law, 1961, under the title “The light goes out in the North”.

Response to sowing time of three contrasting Australian cultivars of oilseed rape (Brassica napus)

1990 ◽  
Vol 114 (3) ◽  
pp. 275-283 ◽  
Author(s):  
N. J. Mendham ◽  
J. Russell ◽  
N. K. Jarosz
Keyword(s):  
Oilseed Rape ◽  
Oil Content ◽  
Grain Filling ◽  
Vernalization Response ◽  
Sowing Time ◽  
The North ◽  
Immature Seeds ◽  
The Many ◽  
A Site ◽  
Seed Yields

SUMMARYSerial sowings of three cultivars of oilseed rape were made from autumn (May) to spring (October) at two sites, one in the north and one in the south of Tasmania, in 1981. The highest seed yields at both sites exceeded 5 t/ha from early sowing, ranging down to c. 2 t/ha from late sowing at a site where irrigation was adequate and to < 1 t/ha where late-sown crops suffered from water stress. The midseason cultivar Marnoo gave the highest yields at both sites, resulting from a combination of substantial (800 g/m2) top growth before flowering, excellent seed survival, a long period for grain filling and high oil content. The early-flowering line RU1 made much less growth before flowering; while this was partly made up for in later growth, nearly as many seeds per pod being retained as in Marnoo, oil content was low. The later-flowering cultivar Wesbell made more growth before flowering than the other cultivars, but when sown early it tended to grow tall, lodge and lose many pods in the dense, tangled canopy. This, combined with generally fewer seeds per pod, resulted in a much less efficient crop in allocation of dry matter to seeds and oil. Wesbell failed to flower uniformly from the late sowings, indicating segregation for vernalization response. The many immature seeds at harvest gave a low overall oil content. All three cultivars responded to vernalization and longer photoperiod in a pot experiment. While photoperiod appeared to be the main factor controlling the development rate to flowering in the field, there were interactions with vernalization response andtemperature.

scholarly journals OCCURRENCE OF INSECT PESTS IN FRUITS OF Caryocar brasiliense (CARYOCARACEAE) IN THE NORTH OF MINAS GERAIS

2021 ◽  
Vol 34 (3) ◽  
pp. 631-639
Author(s):  
RENAN ALVES SANTOS ◽  
VINÍCIUS ORLANDI BARBOSA LIMA ◽  
TATIANNE GIZELLE MARQUES SILVA
Keyword(s):  
Insect Pests ◽  
Regional Economics ◽  
Predation Rate ◽  
Morphological Features ◽  
The North ◽  
Mother Plants ◽  
Morphological Variables ◽  
Caryocar Brasiliense ◽  
Different Origins ◽  
Insect Attack

ABSTRACT Caryocar brasiliense Camb. is a typical species from the Cerrado that represents a relevant income for the population where the fruit is produced. The ocorrence of insect pests provokes damage in the fruit and making its commercialization unfeasible. Then, this study aimed to identify the pest insect the fruit and the pit; to compare the morphological features of the fruit and pit and the damage caused by insects among mother plants and their origins and correlate the fruit and pit morphological features with the damage caused by the insects. Three different origins were evaluated, 12 mother plants by origin and ten fruit by mother plant. All the fruit were opened, checked for the insect damage and the fruit and pit morphological variables were determined. The insects that caused damage to the pequi embryo were identified as Carmenta sp. (Lepidoptera: Sesiidae) and Amblycerus sp (Coleoptera: Chrysomelidae). The probability analysis showed significant effect on the mother plants and origins for the percentage of fruit and pit attacked where the location of Laje Velha obtained the lowest rates of the insect attack. The fruit and pit of the Fruta de Leite were bigger and heavier than the others, while the correlations among the predation rate and the other morphological variables of the fruit and pit were not significant. Amblycerus sp. and Carmenta sp. may be considered potential pests of pequi, with the risk of compromising the pequizeiro populations and the regional economics.

scholarly journals Abnormal Leaf Development on White Oaks Linked to Drift of Chloroacetamide Herbicides

2005 ◽  
Vol 6 (1) ◽  
pp. 33
Author(s):  
Jayesh B. Samtani ◽  
John B. Masiunas ◽  
James E. Appleby
Keyword(s):  
Central Region ◽  
Leaf Development ◽  
North Central Region ◽  
White Oak ◽  
North Central ◽  
The North ◽  
Leaf Tissues ◽  
Herbicide Drift ◽  
Possible Cause ◽  
Insect Attack

In the last few decades, white oak in the north central region have developed malformed spring leaves called “leaf tatters.” Symptoms begin with the death of interveinal leaf tissues, eventually leaving only the main leaf veins with little interveinal tissues present. Winter injury, frost, insect attack, and herbicide drift were all thought to be possible causes of leaf tatters. This study indicates that drift of chloroacetamide herbicides from applications onto corn and soybean fields is a possible cause of the leaf tatters syndrome. Accepted for publication 14 February 2005. Published 21 February 2005.

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