fertility ratio
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2021 ◽  
Vol 8 (3) ◽  
Author(s):  
Asraa Yaseen Eiliw ◽  
Najat Hussein Zeboon

"A field experiment was conducted in the experimental field affiliated to the college of Agricultural Engineering Sciences, The University of Baghdad, Jadrya during the spring season 2019 to invertigate the response of yield and quality traits of Four sunflower genotypes to the folic acid spray. Randomized Complete Block Design (RCBD) of three replicates within afactorial experiment order was used. The experiment included two factors , the first was represented by four sunflower genotypes ( Ishaqi1, Ishaqi2,Tarzan and Aqmar ) and the second by four folic acid concentrations (0,1,2 and 3 gm L-1 ) sprayed at the two plant stages , the first at 4 leaves ( for 75% of the total plants ), the second at the beginning of the appearance of flower buds . The results showed, Aqmar variety was superior in the diameter of disk, number of seed in disk and averages reached 22.77 cm, and 1225 seed respectively. Ishaqi2 was superior in 1000seed weight (82.66 gm), total seeds yield (5.138 Mg ha-1 ) and oil ratio in seed (44.01%) (2.262 Mg ha-1 ). Without significant differences with Aqmar var. in crop growth rate, seeds yield and biological yield. Spraying folic acid affected significantly the most yield and its comonents studied traits. The concentration 2 gm L-1 was superior in oil ratio number of seeds and plant yield with increasing ratio was 27.03%, 16.2% and 7.77% compard with comparsion respectivly. Wheras the plants treated by spraying 3 gm L-1 of folic acid gave the highest averages of the traits diameter of disk ( 22.34 cm ) fertility ratio ( 99.258% ) and 1000 seed weight ( 77.68 gm ) without significant differences in most traits with 2 gm L-1 concentration . Whereas the plants without spray gave the lowest average for most traits. The interaction between the two factors was its significant in yield and its componets (number of seeds and1000 seed weight).


Russian vine ◽  
2020 ◽  
Vol 14 ◽  
pp. 20-29
Author(s):  
L.A. Maistrenko ◽  

Agrobiological characteristics of grapevine va-riety Nizina is given. The variety was breeded by joint effords of breeder- experimenter Kraynov V.N. and ARRIV&W – Branch of Federal State Budget Scientific Institution «FRARC» as a result of interbreeding of varie-ties Talisman and Kishmish luchistyy. The vari-ety was handed over to the State Test in 2013. It received patent No. 7680 dated 04.02.2015 and was included in the State Register of Breeding Achievements admitted for use in 2015. The variety is of early maturation of table use. The duration of the production period for 5 studied years was 115 days with the amount of active temperatures to full maturity of berries 2673°С. The variety is characterized by high winter hardiness, the percentage of breaking buds varies from 49 to 100 %. With a total amount of minus temperature 519 0C and the absolute minimum temperature of minus 24,6 оC, bud break was 58,5 %. 90-100% of shoots were fruitbearing, fertility ratio 0.6. On a sin-gle-plane trellis, with a planting scheme of 3 m × 1.5 m, the yield from a bush was 5,5 kg or more. Ampelographic description of the variety: flower is complete, clusters of medium density, cylindrical & conical with 1-2 wings, weigh 544 g. The comb is long, the crest is green, herba-ceous. The berry is dark red-purple, widely el-liptical with a pruina coating, weighing about 7.3 g, the parameters of the berry are 24,3 × 21,0 mm. The pulp is meaty. It has moderate sugar accumulation and moderate acidity. The variety has high resistance to mildew and oidi-um. The variety is pointed out as a donor of mildew resistance. It is used for fresh consump-tion. The tasting rating of fresh grapes averages 8.5 points on a ten-point rating scale.


2020 ◽  
Vol 8 (2) ◽  
pp. 1
Author(s):  
Dunya Ahmed ◽  
Mohamed Buheji ◽  
Noor Albakri

This study aims to analyse the different IVF services and its possible impact on family and social life, after the COVID-19 pandemic. The authors selected the Kingdom of Bahrain as a context for the research and explored the IVF influence on the ‘family stability’ and the ‘social stability’. The framework proposed shows the importance of future foresight of IVF transformation in both the area of life and livelihood.The study used a quantitative method to understand the type of demands on the supplied IVF services, and where the capacity could be raised in the new normal. The paper concludes that IVF could be a source for family stability and as one of the means of controlling the rising of psychosocial phenomena in the future. The other implication of this study calls for monitoring the rapid increases of dependency ratio, as fertility ratio drops, and how IVF services should be planned as part of a national policy; especially with the repeated emergency crisis.


2020 ◽  
Vol 7 (3-4) ◽  
pp. 28-49
Author(s):  
József Banyár
Keyword(s):  

A társadalombiztosítást (különösen a folyó finanszírozású nyugdíjrendszert) Magyaror-szágon (de az összes fejlett országban is) erősen sújtja az idősödés. Úgy tűnik, hogy ennek a folyamatnak két forrása van: az egyre növekvő várható élettartam és az alacsony teljes termékenységi mutató (total fertility ratio = TFR). Ebben az elemzésben megpróbálom be-mutatni, hogy csak a második az igazi probléma, a növekvő várható élettartamot könnyen kezelhetjük nyugdíjkorhatár-indexálással, aminek a módszerére reformjavaslatot is teszek. Az alacsony TFR kezelésére javasolt megoldásomat itt csak jelzem, illetve megmutatom, mely írásaimban dolgoztam ki részletesebben.


2000 ◽  
Vol 68 (5) ◽  
pp. 611-618 ◽  
Author(s):  
J. Manzo ◽  
M.I. Vazquez ◽  
M.R. Cruz ◽  
M.E. Hernandez ◽  
P. Carrillo ◽  
...  
Keyword(s):  

1937 ◽  
Vol 37 (4) ◽  
pp. 489-511
Author(s):  
W. J. Martin

The trend of fertility in Wales and the Southern and Midland counties of England was demonstrated and discussed in the previous sections of this enquiry.1 The corresponding vital statistics for Northern England are given in the present concluding section and, in addition, the results that have been found are briefly reviewed for the country as a whole. For the Northern counties the same methods have been employed as in the two previous sections. Briefly, the actual birth-rate has been measured by the number of births per 1000 married women aged 15–45, while as a rough assessment of how far a changing age distribution of married women has affected its level, a potential birth-rate and fertility ratio have also been calculated. The potential birth-rate gives the number of births per 1000 married women aged 15–45 obtained by applying Tait's fertility ratios 48.75, 41.25, 30 and 15 to the number of married women in the age groups 15–19, 20–24, 25–35 and 35–45 respectively. The fertility ratio is the ratio of the actual to the potential birth-rate.


1931 ◽  
Vol 50 ◽  
pp. 179-186 ◽  
Author(s):  
L. Mirskaia ◽  
F. A. E. Crew

SummaryPuberty is defined as that stage of individual development characterised by the ability to elaborate functional gametes and by the physical ability to and the desire to play the appropriate rôle in mating. Maturity is defined as that stage of individual development characterised by the exhibition of the maximum fertility ratio and by the ability to produce viable offspring and to rear them.It is shown that the age at attainment of puberty varies with different stock and with different conditions of husbandry, and that there can be no generally applicable standard. Each worker must standardise his own stock and his own environment.There are considerable individual differences in the age at maturity, and these are referable to dissimilarities in genetic constitution and to differences in husbandry. In this experiment two groups of animals were involved, coloured and albino. The albinos reached puberty much earlier, showed a longer duration of the cornified stage before mating, a higher proportion of matings at first œstrus, a greater proportion of pregnancies following mating at first œstrus, and a slightly longer interval between first and second œstrus.


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