scholarly journals Yield potential and fruit quality of scallop squash (Cucurbita pepo L. var. patissonina Greb. f. radiata Nois.) cultivars grown for processing

2015 ◽  
Vol 68 (3) ◽  
pp. 261-266 ◽  
Author(s):  
Eugeniusz Kołota ◽  
Agnieszka Balbierz

Scallop squash fruits may be harvested at different stages of development. Small size fruits, intended both for the fresh market and the food industry, have the highest biological value. This study was conducted to determine the yield potential of scallop squash cultivars (‘Polo F1’, ‘Disco’, ‘Gagat’, ‘Okra’, ‘Sunny Delight F1’) grown on mulched (black polyethylene foil or black agrotextile) or unmulched soil, and harvested when fruits reached a diameter of 3–6 cm. Based on 3-year average data, the highest marketable and early yield was produced by ‘Sunny Delight F1’. This cultivar is also appreciated by consumers for its yellow colored skin of fruits. Another advantage of this cultivar was its high nutritional value expressed by the highest content of dry matter, vitamin C, polyphenols and minerals (K, P, Ca, Mg), with limited tendency to nitrate accumulation. Among the other cultivars tested, ‘Okra’ showed high yield potential, ‘Gagat’ was a rich source of carotenoids, and ‘Disco’ – polyphenols. Black polyethylene foil and black agrotextile appeared to be equally effective mulching materials. The benefit from the application of mulch was a significant increase in yield without any change in the chemical composition of the fruit.

1986 ◽  
Vol 13 (1) ◽  
pp. 191 ◽  
Author(s):  
JB Passioura

Various techniques for improving the resistance of plants to drought or salinity are discussed in relation to a notional spectrum ranging from rationality to random search. The rational end of the spectrum is exemplified by the control of phenology so that flowering occurs at an optimal time; the random end by wide crosses, such as that between wheat and Elytrigia, which give the remote hope that the high yield-potential of one will combine with the toughness of the other. Most of the techniques occupy the middle ground and involve selecting for characters whose protagonists have strong, but often poorly articulated, hunches that the characters will confer resistance to drought or salinity on the plants possessing them. For drought resistance of grain crops, the possible worth of many of these characters is discussed in relation to their likely impact on improving a crop's ability to (a) extract water from the soil, (b) produce dry matter given a limited water supply, and (c) convert dry matter into grain.


2019 ◽  
Vol 32 (3) ◽  
pp. 679-689
Author(s):  
LUIZ OTÁVIO DUARTE ◽  
JUNIA MARIA CLEMENTE ◽  
ILÍDIO AUGUSTO BORGES CAIXETA ◽  
MARCELO DE PAULA SENOSKI ◽  
LEONARDO ANGELO DE AQUINO

Abstract Cabbage cultivars currently cultivated present high yield potential and may present differences regarding absorption and use of nutrients. Thus, studies quantifying plant growth and nutrient accumulation are the basis to improve fertilization efficiency and optimize yield. This study aimed to determine the dry matter and nutrient (N, P, K, Ca, Mg, S, Cu, Fe, Mn, and Zn) accumulation curve of cabbage cultivars during two growing seasons. Cultivars Astrus Plus and Green Valley were cultivated during summer-autumn crop season, while Astrus Plus and Fênix during the autumn-winter crop season. Plants were sampled after transplanting at 10-day intervals until harvest. Dry matter and nutrient accumulations are variable with growing season and cultivar. The highest dry matter and nutrient accumulation rates occur in the last ten days of the cycle. Fertilizations with N, P, K, Fe, and Zn should receive more attention due to higher harvest indices.


2013 ◽  
Vol 10 (1) ◽  
pp. 20-28
Author(s):  
MA Mannan ◽  
MSU Bhuiya ◽  
MIM Akhand ◽  
MM Rana

The experiment was conducted at the Bangladesh Rice Research Institute Farm, Gazipur, in boro season to determine the optimum planting date and to select the varieties having high yield potential. Traditional aromatic photoperiod sensitive fine rice varieties; Kalijira, Kataribhog, Chinigura and Badshabhog were transplanted from 10 December and continued up to 25 January, both in 2000 and 2001 years, at an interval of 15 days. Forty-day old seedlings were transplanted spaced at 20 cm x 20 cm. Results exhibited that plant tallness, number of tillers and dry matter increased with the advancement of planting dates. On the contrary, the number of panicles, grains panicle-1, panicle length, grain yield, straw yield and growth duration decreased with delaying of planting dates. The intermediate short stature plant type of Chinigura exhibited higher number of panicles (300-331 m-2) and comparatively heavier individual grain (12.25-12.31 g), consequently gave higher grain yield (2.79-3.53 t ha-1 ) planted with in December. However, in late planted situation in 10 January Kalijira exhibited higher number of panicles, grains panicle-1, resulted higher grain yield than the rest of the varieties. Thus, cultivation of traditional aromatic fine rice Chinigura and Kalijira have the potentiality to produced higher grain yield when planted in early December in Boro season. DOI: http://dx.doi.org/10.3329/jsf.v10i1.16275 J Sci Foundation, January-June 2012;10(1):20-28


2004 ◽  
Vol 14 (3) ◽  
pp. 376-380 ◽  
Author(s):  
S.B. Sterrett ◽  
K.G. Haynes ◽  
C.P. Savage

Sixteen broccoli (Brassica oleareacea var. italica) cultivars were evaluated for yield, head maturity, and quality attributes in the fall of 1997. `Liberty', `Sabre', `Barbados', and `XPH12211' were dropped after 1997 because of poor yield, coarse stems with severely shortened internodes, or lack of seed availability. Thus, three new cultivars, `Nomad', `Sussex', and `XPH12212', were included in the 1998 trial. Head yield was generally higher in 1998 than in the cooler and drier 1997. In each year, cultivars were ranked into early and main season based on yield over sequential harvest dates. Only `Windsor' was rated as a main-season cultivar in 1997, but an early-season cultivar in 1998. Cluster analyses were then used to group cultivars within year and season by head quality attributes. Based upon these analyses, `Captain' is recommended for early production because of favorable head quality and moderately high yield potential. After 2 years of tests, none of the main-season cultivars could be recommended. `Arcadia', `Decathlon', and `Windsor' were either too late or inconsistent in maturity. Yield was low for `Excelsior' and `Arcadia'. Head quality of `Laguna' and `XPH12212' was poor or inconsistent. In the 1998 trial, `Nomad' and `Sussex' warranted additional evaluation because of improved yield, head and stem diameter and head quality.


2010 ◽  
Vol 61 (6) ◽  
pp. 493 ◽  
Author(s):  
K. G. Pembleton ◽  
R. S. Smith ◽  
R. P. Rawnsley ◽  
D. J. Donaghy ◽  
A. W. Humphries

Genotype by environmental interactions in lucerne (Medicago sativa L.) present considerable challenges when selecting an appropriate cultivar for a particular location and farming system. Data on the yield and persistence of a range of lucerne cultivars and experimental lines grown in two Tasmanian environments, Forth (41.20°S, 146.27°E, Red Ferrosol soil, under cutting with high fertiliser inputs, i.e. a high yield potential environment) and Cranbook (42.00°S, 148.03°E, Red Ferrosol soil, under grazing with low fertiliser inputs, i.e. a low yield potential environment) were examined using winter activity class as the experimental factor. At Forth, winter-dormant lucernes were the lowest yielding genotypes. In contrast, at Cranbrook, highly winter-active genotypes had lower plant persistence and dry matter yield than winter-dormant genotypes. Modified joint linear regression analysis showed that in a cool temperate climate, winter-dormant genotypes are more suited to a low yield potential environment, whereas highly winter-active genotypes are adapted to a high yield potential environment. Both the semi-winter-dormant and the winter-active genotypes were adapted to all environments. The dry matter yield of winter-dormant and highly winter-active genotypes was most sensitive to environmental conditions in winter and spring, while performance of all cultivars and experimental lines was most stable over summer.


2015 ◽  
Vol 49 (4) ◽  
pp. 227-232
Author(s):  
F Noor ◽  
F Hossain ◽  
U Ara

Eleven genotypes of french bean (Phaseolus vulgaris L.) were screened to select a suitable one which could provide optimum yield of fresh pod, dry seed and biochemical parameters. The maximum seed yield in french bean was found in case of genotype BB-9 (2.96 t/ha) and BARI bush bean -1 (2.95 t/ha), while that of minimum was found in BB-11(1.64 t/ha). However, maximum fresh pod yield (14.25 t/ha) was found for BARI bush bean -1, followed by BARI bush bean -2 (13.23t/ha). BARI bush bean -1 required the minimum time of 88.33 days while BB-3 the maximum of 110.00 days to attain 90% pods maturity. The highest number of diseased plants were observed in BB- 5 (30.33%) and the lowest were in BARI bush bean -1 (7.33%). No significant difference (P< 0.05) in maximum protein content among the studied genotypes was observed, for example BB-15 (21.60%) and BARI bush bean -1 (21.57%). Maximum crude fiber (5.53%) was obtained from BARI bush bean -1, followed by BB-6 (5.50%), BB-20 (5.50%) and BB-5 (5.47%), which all were statistically similar. Among all the genotypes, BARI bush bean -1 showed highest yield and superior quality of french bean. DOI: http://dx.doi.org/10.3329/bjsir.v49i4.22625 Bangladesh J. Sci. Ind. Res. 49(4), 227-232, 2014


2015 ◽  
Vol 11 (2) ◽  
pp. 37-42 ◽  
Author(s):  
MA Mannan ◽  
MSU Bhuiya ◽  
MIM Akhand ◽  
MM Rana ◽  
A Zahan

The experiment was conducted at the Bangladesh Rice Research Institute Farm, Gazipur, in Boro season. BasmatiPNR, Basmati370, Basmati375 and Basmati-D were transplanted started from 10 December, and continued up to 25 January in the following year, at an interval of 15 days. Forty day old seedlings were transplanted spaced at 20 cm × 15 cm, to find out the optimum planting time and to select the Basmati varieties having high yield potential. The tallness of plants, number of tillers and dry matter were increased with the advancement of planting dates. On the country, number of panicles, grains panicle-1, panicle length, grain yield and growth duration decreased as delayed planting dates. The short stature BasmatiPNR and tall plant of Basmati375 exhibited higher number of panicles, grains panicle-1 and heavier individual grain which contributed to increase grain yield. Thus, high yield potential varieties BasmatiPNR and Basmati375 to be planted in optimum time on 10 December, to obtain maximum grain yield of rice in Boro season.  DOI: http://dx.doi.org/10.3329/jsf.v11i2.21594  Journal of Science Foundation, 2013;11(2):37-42


EDIS ◽  
2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Barry L. Tillman

FloRunTM ‘331’ peanut variety was developed by the University of Florida, Institute of Food and Agricultural Sciences, North Florida Research and Education Center near Marianna, Florida.  It was released in 2016 because it combines high yield potential with excellent disease tolerance. FloRunTM ‘331’ has a typical runner growth habit with a semi-prominent central stem and medium green foliage.  It has medium runner seed size with high oleic oil chemistry.


2019 ◽  
Vol 21 (1) ◽  
pp. 165 ◽  
Author(s):  
Dennis N. Lozada ◽  
Jayfred V. Godoy ◽  
Brian P. Ward ◽  
Arron H. Carter

Secondary traits from high-throughput phenotyping could be used to select for complex target traits to accelerate plant breeding and increase genetic gains. This study aimed to evaluate the potential of using spectral reflectance indices (SRI) for indirect selection of winter-wheat lines with high yield potential and to assess the effects of including secondary traits on the prediction accuracy for yield. A total of five SRIs were measured in a diversity panel, and F5 and doubled haploid wheat breeding populations planted between 2015 and 2018 in Lind and Pullman, WA. The winter-wheat panels were genotyped with 11,089 genotyping-by-sequencing derived markers. Spectral traits showed moderate to high phenotypic and genetic correlations, indicating their potential for indirect selection of lines with high yield potential. Inclusion of correlated spectral traits in genomic prediction models resulted in significant (p < 0.001) improvement in prediction accuracy for yield. Relatedness between training and test populations and heritability were among the principal factors affecting accuracy. Our results demonstrate the potential of using spectral indices as proxy measurements for selecting lines with increased yield potential and for improving prediction accuracy to increase genetic gains for complex traits in US Pacific Northwest winter wheat.


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