201.
Field evaluation of micropropagated and conventionally propagated ginger in subtropical Queensland
- Smith, M.K.; Hamill, S.D.
The growth and performance of micropropagated ginger (Zingiber officinale Roscoe)was compared with 'seed'-derived plants in field trials conducted in south-eastern Queensland. In the first generation ex vitro, micropropagated plants had significantly (P<0.01) reduced rhizome yield with smaller knobs and more roots. Micropropagated plants had a greater (P<0.01) shoot: root (rhizome) ratio compared with seed-derived plants. Shoots from micropropagated plants were also significantly (P<0.01) smaller with a greater number of shoots per plant. The unusual shoot morphology of the micropropagated plants did not appear to be related to the presence of benzylaminopurine, a plant growth hormone added to the multiplication medium,...
202.
Host range, symptom expression and RNA 3 sequence analyses of six Australian strains of Cucumber mosaic virus
- Sulistyowati, E.; Mitter, N.; Bastiaan-netb, S.; Roossinck, M.J.; Dietzgen, R.G.
We have characterised six Australian Cucumber mosaic virus (CMV) strains belonging to different subgroups, determined by the sequence of their complete RNA 3 and by their host range and the symptoms they cause on species in the Solanaceae, Cucurbitaceae and on sweet corn. These data allowed classification of strains into the known three CMV subgroups and identification of plant species able to differentiate the Australian strains by symptoms and host range. Western Australian strains 237 and Twa and Queensland strains 207 and 242 are closely related members of CMV subgroup IA, which cause similar severe symptoms on Nicotiana species. Strains...
203.
Ginger (Zingiber officinale) autotetraploids with improved processing quality produced by an in vitro colchicine treatment
- Smith, M.K.; Hamill, S.D.; Gogel, B.J.; Severn-Ellis, A.A.
Ginger autotetraploids were produced by immersing shoot tips in a 0.5% w/v colchicine,2% v/v dimethyl sulfoxide solution for 2 h. Stomatal measurements were used as an early indicator of ploidy differences in culture with mean stomata length of tetraploids (49.2 um)being significantly larger than the diploid (38.8 um). Of the 500 shoot tips treated, 2% were characterised as stable autotetraploid lines following field evaluation over several seasons. Results were confirmed with flow cytometry and, of the 7 lines evaluated for distinctness and uniformity, 6 were solid tetraploid mutants and 1 was a periclinal chimera. Significant differences were noted between individual...
204.
Discovery of genes associated with fruit ripening in Carica papaya using expressed sequence tags
- Devitt, L.C.; Sawbridge, T.; Holton, T.A.; Mitchelson, K.; Dietzgen, R.G.
To identify genes involved in papaya fruit ripening, a total of 1171 expressed sequence tags (ESTs) were generated from randomly selected clones of two independent fruit cDNA libraries derived from yellow and red-fleshed fruit varieties. The most abundant sequences encoded:chitinase, 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase, catalase and methionine synthase, respectively. DNA sequence comparisons identified ESTs with significant similarity to genes associated with fruit softening, aroma and colour biosynthesis. Putative cell wall hydrolases, cell membrane hydrolases, and ethylene synthesis and regulation sequences were identified with predicted roles in fruit softening. Expressed papaya genes associated with fruit aroma included isoprenoid biosynthesis and shikimic...
205.
Kirramyces viscidus sp. nov., a new eucalypt pathogen from tropical Australia closely related to the serious leaf pathogen, Kirramyces destructans
- Andjic, V.; Barber, P.A.; Carnegie, A.J.; Pegg, G.S.; Hardy, G.E.S.J.; Wingfield, M.J.; Burgess, T.
Kirramyces destructans is a serious pathogen causing a leaf, bud and shoot blight disease of Eucalyptus plantations in the subtropics and tropics of South-East Asia. During surveillance of eucalypt taxa trials in northern Queensland, symptoms resembling those of K. destructans were observed on Eucalyptus grandis and E. grandis × E. camaldulensis. Phylogenetic and morphological studies revealed that the Kirramyces sp. associated with these symptoms represents a new taxon described here as K. viscidus sp. nov., which is closely related to K. destructans. Plantation assessments revealed that while E. grandis from the Copperload provenance, collected in northern Queensland, recovered from disease,...
206.
Developing improved supply chains for temperate fruits in transitional Asian economies of Thailand and Vietnam.
- Nissen, R.J.; George, A.P.; Broadley, R.H.; Newman, S.M.; Hetherington, S.
Asia's increasing demand for both tropical and temperate fruit is projected to grow significantly. Compared with most developed countries, the production of temperate fruits (peach, nectarine, plum and apple) has expanded rapidly in China over the past 20 years. In contrast, current production of plums and peaches in neighbouring countries (Thailand and Vietnam) is very low but their fruit enters the market earlier. Thailand and Vietnam have enormous potential to satisfy a market window in the northern hemisphere period from March to May inclusive when there is little or no stone fruit on the Asian market. In Vietnam, fruit is...
207.
Strategic Analysis: A key factor in developing horticultural supply chains in transitional Asian economies
- George, A.P.; Nissen, R.J.; Broadley, R.H.
Globalisation is set to have a major impact on world horticultural production and distribution of fruit and vegetables throughout the world. In contrast to developing countries such as China, production and consumption of fresh fruit and vegetables in most developed countries is relatively static. For developed countries, we are starting to see consolidation in the number of farms producing fruit and vegetables with falling or static prices and real farm incomes. Global supply chains are now dominated by a few large multi-national retailers supplied by preferred trans-national distribution companies. The major competitive advantages that are emerging are consistency of supply...
208.
Perennial grassland dynamics on fertile plains: Is coexistence mediated by disturbance?
- Lewis, T.; Clarke, P.J.; Reid, N.; Whalley, R.D.B.
The response of grasslands to disturbance varies with the nature of the disturbance and the productivity of the landscape. In highly productive grasslands, competitive exclusion often results in decreased species richness and grazing may allow more species to coexist. Once widespread, grasslands dominated by Dichanthium sericeum (Queensland bluegrass) and Astrebla spp. (Mitchell grass) occur on fertile plains but have been reduced in extent by cultivation. We tested the effects of exclusion of livestock grazing on these grasslands by comparing the floristic composition of sites in a nature reserve with an adjacent stock reserve. In addition, sites that had been cultivated...
209.
Transactions of the Indiana Horticultural Society for the year ... : being the proceedings of the ... annual session.
- Indiana Horticultural Society.
68 v. :
210.
Manning's plant buyers index : available plant and seed material for all American gardens.
- Manning, J. Woodward (Jacob Woodward), b. 1866.
4th ed.
211.
Horticulturist and journal of rural art and rural taste.
30 v. :
212.
American horticultural annual.
v. :
213.
Lyon horticole.
43 v.
214.
Entry and Exit of firms explained by trigger points: Dutch glasshouse horticulture
- Goncharova, Natalia V.; Oskam, Arie J.
The entry and exit decisions, considered as investment decisions, are investigated in the paper. Taking into account the heterogeneity of entry and exit, the analysis is based on two types of entry-exit: real (related to the establishment or closing of a firm), or entry-exit in a new sector (indicating the diversification or changing specialisation). The theoretical model is based on Marshallian trigger points with Real Option trigger points as an alternative. The estimation exploited the negative binomial model to investigate the role of trigger points (thresholds) on the observed number of entry or exit firms in Dutch glasshouse horticulture over...
215.
Marketing Channel and Technology Adoption: Chinese Villages in the Local Horticulture Market
- Wang, L.; Rozelle, S.; Huang, J.; Rearson, T.; Dong, X.
China has been experiencing the substantial changes in agricultural sectors in the pastdecades. Interaction bet ween diversified channels for marketing agricultural products and modern technology adoption are important for restructuring agriculture and improving productivity, but fewer researches have been done in this field in China. With the village - level data collected a round Beijing, the capital of China, this study attempts to find out the major market channel(s) in rural China and its (their) linkage with technology innovation in the horticulture sector. The study finds that small brokers still dominate horticultural product distribution in rural area because of their...
216.
Abstract Information and Communication Technology (ICT) Adoption in Horticulture: A Comparison to the EFITA Baseline
- Nicole Taragola A; Ehud Gelb B
Understanding and alleviating the constraints to ICT adoption are currently at the forefront of ICT for agricultural production and rural development. EFITA 1 is conducting since 1999 a survey to gain such understanding. The 2004 symposium of the International Society for Horticultural Science (ISHS) offered a unique opportunity to compare the EFITA survey results to symposium participant’s perspectives. The following were identified as comparable adoption constraints: end user (ICT) proficiency, ICT benefit awareness, time, cost of technology, system integration, and software availability. The following constraints were mainly indicated by respondents originating from “developed ” countries: no perceived economic benefits, do...
217.
Poverty Alleviation in the Horticulture Sector: Insights from Uganda and Vietnam
- Achterbosch, Thom; Allbritton, Amanda; Quang, Dang Viet; Eaton, Derek; de Jager, Andre; Meijerink, Gerdien; Njue, Evelyn; Ssonko, Robinah; Stallen, Marcel; Wertheim-Heck, Sigrid; van Wijk, Siebe
There is increasing insight into how household poverty in rural and peri-urban areas is affected by developments in the markets for fruit, vegetables and flowers. This study extends the knowledge, and feeds into the debate on agricultural growth policies. Based on a positive outlook on the growth of horticultural production and distribution and marketing in the low income countries of Uganda and Vietnam, this paper asks whether poor and vulnerable groups in society share in the benefits of the foreseen economic expansion. Primary survey data is collected on the differentiated position of low-income households in different supply structures (with varying...
218.
Deseret News 1859-08-17 A Treatise on the Present State of Horticulture in Utah
- Sayers, E.
for the deseret news A treatise oil on the present state of horticulture ti in utah i BT BY E sate SAVE sayers savers US horticulturist no 9 THE HOP GARDEN CONTINUED VISITING comfy in the he afternoon commences the regular visiting of the hop garden first comes the young squire on his prancing pony to pay bib bia respects to the planters wife and anti family and more par 0 to o pretty fanny the eldest daughter whilst pay paying I 1 ng this rural salutation polly primrose one of tle the prettiest lasses of the company picks of...
219.
Deseret News 1859-04-27 A Treatise on the Present State of Horticulture in Utah
- Sayers, E.
for the deseret news sews A treatise on the present state of horticulture ti in utah BY E sayers horticulturist NO NOS 2 ON 09 GROWING SEED selecting tins root noot and seed nothings is more important to the he improvement of vegetables than a correct method of selecting roots and a pure stock for seed As it is a given princ pie ale that like produces ilke like it ii u reasonable that we should always choose the best host roots to i produce seed for a future crop this ia is not noto however at always ways the...
220.
The Growing Importance of the Environmental Horticulture Industry in the Agricultural Economy of the Northeastern United States
- Shields, Martin; Willis, Fern K.
This study examines several aspects of the Environmental Horticulture Industry (EHI) in the northeastern United States. First, the EHI is compared to other agricultural sectors in the region. The sector's growth is found to far outpace growth in traditionally important crops and commodities. The study then takes a closer look at the EHI in Pennsylvania, utilizing survey data and the IMPLAN input-output model to estimate the overall economic contributions of the industry to the state's economy. Results suggest that the EHI generates nearly $3.3 billion in value-added and more than 107,000 state jobs through direct, indirect, and induced effects. Finally,...
