Evaluation and breeding of tedera for Mediterranean climates in southern Australia

2014 ◽  
Vol 65 (11) ◽  
pp. 1114 ◽  
Author(s):  
D. Real ◽  
C. M. Oldham ◽  
M. N. Nelson ◽  
J. Croser ◽  
M. Castello ◽  
...  
Keyword(s):  
Selection Index ◽  
Field Performance ◽  
Field Evaluation ◽  
Secondary Compounds ◽  
Breeding Program ◽  
F1 Hybrids ◽  
Annual Rainfall ◽  
Economic Modelling ◽  
Waterlogging Tolerance ◽  
Drought Tolerant

Tedera (Bituminaria bituminosa C.H. Stirton var. albomarginata and var. crassiuscula) has been identified as one of the most productive and drought-tolerant species of herbaceous perennial legumes based on 6 years of field evaluation in Western Australia in areas with Mediterranean climate and annual rainfall ranging from 200 to 600 mm. Importantly, tedera demonstrated broad adaptation to diverse soils, and some accessions have shown moderate levels of tolerance to waterlogging and salinity. Tedera exhibits minimal leaf shedding during summer and autumn. Economic modelling strongly suggests that giving livestock access to green tedera in summer and autumn will dramatically increase farm profit by reducing supplementary feeding. The breeding program (2006–12) evaluated the available genetic diversity of tedera for its field performance in seven nurseries with 6498 spaced plants in total covering a wide variation in rainfall, soils and seasons. Best overall plants were selected using a multivariate selection index generated with best linear unbiased predictors (BLUPs) of dry matter cuts and leaf retention traits. The breeding program also evaluated tedera for grazing tolerance, grazing preference by livestock, waterlogging tolerance, seed production, cold tolerance, disease susceptibility and presence of secondary compounds. Tedera is a diploid, self-pollinated species. Therefore, 28 elite parents were hand-crossed in several combinations to combine outstanding attributes of parents; F1 hybrids were confirmed with the aid of highly polymorphic, simple sequence repeat markers. The F1s were progressed to F4s by single-seed descent breeding. Elite parent plants were selfed for two generations to be progressed in the breeding program without hybridisation. Over time, selections from the crossing and selfing program will deliver cultivars of three ideotypes: (i) drought-tolerant, (ii) cold- and drought-tolerant, (iii) waterlogging- and drought-tolerant.

Field evaluation of tissue-cultured bananas in south-eastern Queensland

1990 ◽  
Vol 30 (4) ◽  
pp. 569 ◽  
Author(s):  
RA Drew ◽  
MK Smith
Keyword(s):  
Callus Culture ◽  
Field Performance ◽  
Field Evaluation ◽  
Ratoon Crop ◽  
Musa Sp ◽  
Planting Material ◽  
Lateral Buds ◽  
Conventional Material ◽  
Banana Cultivar ◽  
Plant Crop

Field performance is described for tissue cultured plants and conventional propagules of planting material of banana cultivar 'New Guinea Cavendish' (Musa sp., AAA group, Cavendish subgroup). Tissuecultured plants were produced by either regeneration of plants from callus culture or by micropropagation of plants following the release of dormant buds at the leaf axils of explants. The conventional material consisted of suckers and 'bits' (lateral buds and associated corm material). Tissue-cultured plants established more quickly, were taller, and had a shorter time to bunch emergence and harvest of plant crop than conventional planting material. They had significantly (P<0.05) higher yields in terms of bunch weight, which was a function of greater numbers of fingers and hands. These advantages did not extend to the ratoon crop. Sucker production on tissue-cultured plants was significantly (P<0.01) higher up to 8 months after planting, equal to conventional material from 8 months to harvest, and then significantly lower. Twenty-two per cent of the plants derived from callus were off-types compared with 3% in the line produced by axillary bud proliferation. No off-types were observed in conventional planting material.

scholarly journals Selection of Drought Tolerant Maize Hybrids Using Path Coefficient Analysis and Selection Index

2017 ◽  
Vol 20 (3) ◽  
pp. 132-139 ◽  
Author(s):  
Abdalla Dao ◽  
Jacob Sanou ◽  
Edgar V.S. Traor ◽  
Vernon Gracen ◽  
Eric Y. Danquah
Keyword(s):  
Selection Index ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Maize Hybrids ◽  
Drought Tolerant ◽  
Selection Of

scholarly journals MoBPSweb: A web-based framework to simulate and compare breeding programs

2020 ◽  
Author(s):  
T. Pook ◽  
L. Büttgen ◽  
A. Ganesan ◽  
N.T. Ha ◽  
H. Simianer
Keyword(s):  
Selection Index ◽  
Relevant Information ◽  
Simulation Software ◽  
Breeding Program ◽  
Breeding Value ◽  
Long Term Effects ◽  
General Applicability ◽  
Breeding Programs ◽  
Web Based ◽  
Value Estimation

ABSTRACTSelective breeding is a continued element of both crop and livestock breeding since early prehistory. In this work, we are proposing a new web-based simulation framework (“MoBPSweb”) that is combining a unified language to describe breeding programs with the simulation software MoBPS, standing for ‘Modular Breeding Program Simulator’. Thereby, MoBPSweb is providing a flexible environment to enter, simulate, evaluate and compare breeding programs. Inputs can be provided via modules ranging from a Vis.js-based flash environment for “drawing” the breeding program to a variety of modules to provide phenotype information, economic parameters and other relevant information. Similarly, results of the simulation study can be extracted and compared to other scenarios via output modules (e.g. observed phenotypes, accuracy of breeding value estimation, inbreeding rates). Usability of the framework is showcased along a toy example of a dairy cattle breeding program on farm level, with comparing scenarios differing in implemented breeding value estimation, selection index and selection intensity being considered. Comparisons are made considering both short and long-term effects of the different scenarios in terms of genomic gains, rates of inbreeding and the accuracy of the breeding value estimation. Lastly, general applicability of the MoBPSweb framework and the general potential for simulation studies for genetics and in particular in breeding are discussed.

scholarly journals Identifying drought Tolerant Canola Genotypes using Selection Index of Ideal Genotype

2019 ◽  
Vol 11 (29) ◽  
pp. 117-126
Author(s):  
Hassan Zali ◽  
Tahereh Hasanloo ◽  
Omid Sofalian ◽  
Ali Asgharii ◽  
Mehran Enayati Shariatpanahi ◽  
...  
Keyword(s):  
Selection Index ◽  
Drought Tolerant ◽  
Ideal Genotype

Field evaluation of tissue-cultured papaw clones in Queensland

1993 ◽  
Vol 33 (4) ◽  
pp. 475 ◽  
Author(s):  
RA Drew ◽  
JN Vogler
Keyword(s):  
Field Performance ◽  
Field Evaluation ◽  
Root Systems ◽  
Planting Date ◽  
Adult Tissue ◽  
Node Number ◽  
Juvenile Phase ◽  
Commercial Practice ◽  
Lower Height ◽  
Reduced Time

Field performance of tissue-cultured clones of papaws established either from adult tissue of a high-yielding female plant or from juvenile tissue of seedlings (2 females and 2 hermaphrodites) was compared with seedling controls. All tissue-cultured plants had strong root systems and established more quickly than seedlings. Plants from adult tissue (TCA) had a reduced juvenile phase, as evidenced by increased circumference, lower height of first flower, reduced time to harvest, and higher fruit numbers per metre of stem. Planting date affected node number of first flower for TCA plants but not seedlings. TCA plants had higher yields than seedlings when planted in spring, and this could lead to improved commercial practice. Differences between clones established from juvenile tissue and their respective seedling controls varied and were not consistent with a reduced juvenile phase. Four dwarf off-type plants (<1% of population) originated from a single bud explant.

Field Evaluation and Cost Effectiveness of Crack Sealing in Flexible and Composite Pavements

2018 ◽  
Vol 2672 (12) ◽  
pp. 51-61 ◽  
Author(s):  
Momen Mousa ◽  
Mostafa A. Elseifi ◽  
Mohammad Bashar ◽  
Zhongjie Zhang ◽  
Kevin Gaspard
Keyword(s):  
Cost Effectiveness ◽  
Cost Benefit Analysis ◽  
Field Performance ◽  
Cost Benefit ◽  
Cost Effective ◽  
Field Evaluation ◽  
Asphalt Emulsion ◽  
Transverse Cracks ◽  
Crack Sealing ◽  
Composite Pavements

One of the most common methods used to treat longitudinal and transverse cracks is crack sealing (CS), which is categorized as a preventive maintenance method. Field performance and cost-effectiveness of this treatment widely vary depending on pavement conditions and installation of the material. The objective of this study was to evaluate the field performance and cost-effectiveness of CS in flexible and composite pavements in hot and wet climates such as Louisiana, and to develop a model that would quantify the expected benefits of CS given project conditions. To achieve this objective, 28 control sections that were crack-sealed between 2003 and 2010 were monitored for at least four years. These sections included flexible and composite pavements, sealed and unsealed segments, and varying traffic levels. The performance of these sections was evaluated for the random cracking index (RCI) and roughness index (RI). Based on the results of this analysis, it was concluded that CS only has a significant impact on random cracking. When compared with untreated segments, CS extended pavement service life (PSL) by two years. When compared with the original pavement, CS extended PSL by 5.6 and 3.2 years for flexible and composite pavements, respectively, if applied at the correct time. The cost-benefit analysis indicated that CS is cost-effective whether asphalt emulsion or rubberized asphalt sealant is used. A non-linear regression model was developed to predict the extension in PSL because of CS without the need for performance data based on the average daily traffic (ADT), pavement type, and prior pavement conditions.

Operating Experience of the First Solar® Taurus 70S Mechanical Drive Installation

1997 ◽  
Author(s):  
A. James Hoshizaki
Keyword(s):  
Gas Turbine ◽  
Performance Test ◽  
Operating Experience ◽  
Field Performance ◽  
Field Evaluation ◽  
Pipeline System ◽  
Test Results ◽  
Compressor Station ◽  
Test Program ◽  
Natural Gas Pipeline

In October 1995, NOVA Gas Transmission Ltd. (NGTL) commissioned the first mechanical drive application of Solar Turbines’ Taurus™ 70S gas turbine. The unit was installed as a part of a turbine/compressor package at a compressor station on NGTL’s natural gas pipeline system. As this first installation was a part of a development test program by Solar Turbines, field evaluation was conducted subsequent to the original commissioning and related testing. This paper presents NGTL’s experiences in commissioning, startup and operation. Field performance test results for the gas turbine are presented and focus on output power, thermal efficiency and exhaust emissions. Some of the findings and observations from the field evaluation tests performed by Solar are also discussed. In addition, a description of the facility in which the turbine/compressor package is installed is provided.

scholarly journals Energy Efficient Wireless Sink Node for Monitoring of Snow Environment

2021 ◽  
Vol 12 (2) ◽  
pp. 1775-1785
Author(s):  
Rajesh Kumar Garg, Et. al.
Keyword(s):  
Energy Efficient ◽  
Snow Depth ◽  
Field Performance ◽  
Cost Effective ◽  
Field Evaluation ◽  
Sink Node ◽  
Depth Sensor ◽  
Power Module ◽  
Term Field

Conventionally, sink node is considered to have large hardware and energy resources; however, many times sink node is working in same conditions as source nodes, especially when deployed for monitoring of the snow environment. In this paper, an effort has been made to practically realize a sink node which is energy efficient and cost effective for monitoring applications. To save energy, the Main Power Module is designed to provide controlled powers to sensors and sub-modules. The paper discusses design aspects of the sink node and its long-term field evaluation with environmental sensors, especially the Snow Depth Sensor of MaxBotix. Field performance of Snow Depth Sensor has been enhanced by Euclidean Minimum Distance filter which improved the correlation of data to 0.997. The proposed design helps to achieve energy consumption of 42.72mWh which is significantly lower than the previous work. The reliable working of the sink node in the long-term field evaluation indicates that snow environment can be monitored at less expense of energy by employing proposed sensors and the specially designed sink node.

scholarly journals Field Evaluation of Herbicide-resistant Transgenic Broccoli

HortScience ◽  
2000 ◽  
Vol 35 (5) ◽  
pp. 930-932 ◽  
Author(s):  
D. Waterer ◽  
S. Lee ◽  
G. Scoles ◽  
W. Keller
Keyword(s):  
Gene Transfer ◽  
Herbicide Resistance ◽  
Single Gene ◽  
Field Performance ◽  
Field Evaluation ◽  
Parental Line ◽  
Single Application ◽  
Dominant Trait ◽  
Butanoic Acid ◽  
Herbicide Resistant

This study examined the field performance and herbicide resistance of lines of broccoli (Brassica oleracea Italica Group) generated from plants transformed for resistance to the herbicide glufosinate by Agrobacterium-mediated gene transfer. Seedling vigor and vegetative growth characteristics of the first recombinant generation (R1) produced by selfing the transformed lines were comparable to those of the F1 parent (cv. Cruiser) and an equivalent nontransformed F2 line. In hand-weeded trials, marketable yields of the R1-transformed lines were comparable to the parental line or the corresponding nontransformed F2 line. A single application of the recommended rate of the nonselective herbicide glufosinate slowed the growth and reduced yields of nontransformed broccoli, but had little effect on head quality or yields of most transformed lines. Inheritance of herbicide resistance in the R1 progeny of the R0 transgenic plants followed standard Mendelian ratios for a completely dominant trait controlled by a single gene. The results confirm the potential for improvement of broccoli through the incorporation of herbicide resistance by gene transfer technology. Chemical name used: 2-amino-(4-hydroxymethylphosphinyl)butanoic acid (glufosinate, phosphinothricine).

scholarly journals ‘Raider Azure’ Mealy Blue Sage (Salvia farinacea var. farinacea Benth.)

HortScience ◽  
2008 ◽  
Vol 43 (2) ◽  
pp. 540-541
Author(s):  
Cynthia B. McKenney ◽  
Sandra A. Balch ◽  
Victor Hegemann ◽  
Susan P. Metz
Keyword(s):  
Growth Habit ◽  
Breeding Program ◽  
Plant Improvement ◽  
The Past ◽  
Bloom Period ◽  
Drought Tolerant ◽  
Germplasm Resource ◽  
Bedding Plant ◽  
Vigorous Growth ◽  
Texas Tech University

Native wildflowers provide a rich germplasm resource for continued plant improvement. Over the past 10 years, native accessions of Salvia farinacea var. farinacea Benth. have been collected and introduced into an ornamental breeding program. Texas Tech University announces the release of a new mealy blue sage cultivar named ‘Raider Azure’. ‘Raider Azure’ is intended for use as a drought-tolerant native ornamental for demanding landscapes. It has been trialed for use as a perennial bedding plant where it has displayed attractive violet–blue flowers and a vigorous growth habit, which is common in this species. The extended bloom period for mealy blue sage suggests the cultivar ‘Raider Azure’ is well suited for full sun bedding displays in a variety of locations.

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