Pub Date : 1988-10-01DOI: 10.1080/03015521.1988.10425658
W. Scott, S. Hines, B. Love
Abstract A paddock-scale experiment was conducted over two seasons to determine whether winter barley will fit adequately into a fanning system that requires both feed and grain, and to investigate how grazing affects the grain yield components. The 6-row ‘Illia’ and 2-row ‘Priver’ cultivars produced 1.3–2 t/ha of DM by mid August when sown in April. Grazing to ground level in August reduced grain yields by about 10%, by reducing the ear population, despite the fact that mainstem apices were below soil level at thetime of grazing. Combine harvested grain yields ranged from 2.3 to 3.6 t/ha in seasons with below average rainfall.
{"title":"The effects of grazing on components of grain yield in winter barley","authors":"W. Scott, S. Hines, B. Love","doi":"10.1080/03015521.1988.10425658","DOIUrl":"https://doi.org/10.1080/03015521.1988.10425658","url":null,"abstract":"Abstract A paddock-scale experiment was conducted over two seasons to determine whether winter barley will fit adequately into a fanning system that requires both feed and grain, and to investigate how grazing affects the grain yield components. The 6-row ‘Illia’ and 2-row ‘Priver’ cultivars produced 1.3–2 t/ha of DM by mid August when sown in April. Grazing to ground level in August reduced grain yields by about 10%, by reducing the ear population, despite the fact that mainstem apices were below soil level at thetime of grazing. Combine harvested grain yields ranged from 2.3 to 3.6 t/ha in seasons with below average rainfall.","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"67 1","pages":"313-319"},"PeriodicalIF":0.0,"publicationDate":"1988-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86814995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-07-01DOI: 10.1080/03015521.1988.10425646
C. J. Stanley, I. Warrington
Abstract The seasonal frost hardiness of several ornamental species was evaluated by exposing intact plants to controlled advective frost conditions in spring, midsummer, autumn, and midwinter. Cultivars of the evergreen broad-leaved species Camellia japonica, Daphne odora, Desfontainea spinosa, Grevillea × gaudi-chaudi, Hardenbergia violacea, Hypericum × moserianum, Nandina domestica, and Photinia serrulata × glabra ‘Rubens’ all developed limited winter frost hardiness with the most hardy (Camellia and Photinia) being killed at temperatures below-17°C. Generally, evergreen broad-leaved species from northern zones were more tolerant than Australasian species. Of the ornamental conifers examined, Cupressus macrocarpa was only moderately hardy in winter, being injured by temperatures lower than-8°C and killed below-14°C, whereas Juniperus chinensis tolerated temperatures down to-19°C without injury. The summer frost tolerance of all of these species was similar and all were injured or killed by temperatures...
{"title":"Seasonal frost tolerance of some ornamental evergreen broad-leaved and coniferous tree and shrub species.","authors":"C. J. Stanley, I. Warrington","doi":"10.1080/03015521.1988.10425646","DOIUrl":"https://doi.org/10.1080/03015521.1988.10425646","url":null,"abstract":"Abstract The seasonal frost hardiness of several ornamental species was evaluated by exposing intact plants to controlled advective frost conditions in spring, midsummer, autumn, and midwinter. Cultivars of the evergreen broad-leaved species Camellia japonica, Daphne odora, Desfontainea spinosa, Grevillea × gaudi-chaudi, Hardenbergia violacea, Hypericum × moserianum, Nandina domestica, and Photinia serrulata × glabra ‘Rubens’ all developed limited winter frost hardiness with the most hardy (Camellia and Photinia) being killed at temperatures below-17°C. Generally, evergreen broad-leaved species from northern zones were more tolerant than Australasian species. Of the ornamental conifers examined, Cupressus macrocarpa was only moderately hardy in winter, being injured by temperatures lower than-8°C and killed below-14°C, whereas Juniperus chinensis tolerated temperatures down to-19°C without injury. The summer frost tolerance of all of these species was similar and all were injured or killed by temperatures...","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"128 1","pages":"239-248"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88185349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-07-01DOI: 10.1080/03015521.1988.10425653
R. K. Bansal, S. Menzies, P. Broadhurst
Abstract Asparagus officinalis L. accessions were screened for resistance to Stemphylium leaf spot under controlled environmental conditions. The plants were inoculated with a conidial suspension of two isolates of Stemphylium sp. from asparagus. Disease severity assessments, based on percentage stem area necrosis (% SAN), were made 13—17 days after inoculation. Estimates of mean % SAN ranged from 31 to 74%. None of the accessions showed outstanding levels of resistance, but significant differences were observed in disease susceptibility between accessions. The accessions also differed for within-accession variability. Selection for increased levels of resistance is likely to be most effective in accessions with high within-accession variance values.
{"title":"Evaluation of Asparagus officinalis L. germplasm for resistance to Stemphylium leaf spot","authors":"R. K. Bansal, S. Menzies, P. Broadhurst","doi":"10.1080/03015521.1988.10425653","DOIUrl":"https://doi.org/10.1080/03015521.1988.10425653","url":null,"abstract":"Abstract Asparagus officinalis L. accessions were screened for resistance to Stemphylium leaf spot under controlled environmental conditions. The plants were inoculated with a conidial suspension of two isolates of Stemphylium sp. from asparagus. Disease severity assessments, based on percentage stem area necrosis (% SAN), were made 13—17 days after inoculation. Estimates of mean % SAN ranged from 31 to 74%. None of the accessions showed outstanding levels of resistance, but significant differences were observed in disease susceptibility between accessions. The accessions also differed for within-accession variability. Selection for increased levels of resistance is likely to be most effective in accessions with high within-accession variance values.","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"22 1","pages":"295-297"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86364500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-07-01DOI: 10.1080/03015521.1988.10425645
B. Love, D. Askin, B. Mckenzie
Abstract In two growing seasons, navy beans cv. Sanilac were sown at populations ranging from 44 to 120 plants/m2 with or without irrigation and shelter in Canterbury. In the two seasons, rainfall was 156% and 66% of the long term mean. Irrigation had the largest effect on seed yield. In 1983/84 irrigated plants yielded 319 g/m2 and unirrigated plants only 278 g/m2. In the drier season, irrigated plants yielded 309 g/m2 while the dryland crop yielded only 131 g/m2. Shelter had only a small effect on seed yield, in only one season, despite reducing wind run by about 40%. Generally, higher plant populations resulted in higher seed yields particularly with irrigation. However in 1984/85, unirrigated crop yield with 30 plants/m2 was 135g/m2andat 120plants/m2 only 125 g/m2. The results indicated that navy beans should be grown with irrigation in Canterbury to be a viable farm option. High plant populations may produce higher yields and ease harvesting problems.
{"title":"Effect of shelter, irrigation, and plant population on yield and yield components of navy beans (Phaseolus vulgaris L.)","authors":"B. Love, D. Askin, B. Mckenzie","doi":"10.1080/03015521.1988.10425645","DOIUrl":"https://doi.org/10.1080/03015521.1988.10425645","url":null,"abstract":"Abstract In two growing seasons, navy beans cv. Sanilac were sown at populations ranging from 44 to 120 plants/m2 with or without irrigation and shelter in Canterbury. In the two seasons, rainfall was 156% and 66% of the long term mean. Irrigation had the largest effect on seed yield. In 1983/84 irrigated plants yielded 319 g/m2 and unirrigated plants only 278 g/m2. In the drier season, irrigated plants yielded 309 g/m2 while the dryland crop yielded only 131 g/m2. Shelter had only a small effect on seed yield, in only one season, despite reducing wind run by about 40%. Generally, higher plant populations resulted in higher seed yields particularly with irrigation. However in 1984/85, unirrigated crop yield with 30 plants/m2 was 135g/m2andat 120plants/m2 only 125 g/m2. The results indicated that navy beans should be grown with irrigation in Canterbury to be a viable farm option. High plant populations may produce higher yields and ease harvesting problems.","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"276 1","pages":"231-237"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73295958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-07-01DOI: 10.1080/03015521.1988.10425654
J. Farrell, M. Stufkens
Abstract Similar numbers of adult winged rosegrain aphid (RGA), Metopolophium dirhodum (Walk.), per unit area were recorded as immigrants on autumn-sown wheat, oats, barley, and rye in May-June 1987 at Lincoln.RGA population growth occurred at a similar rate up to the three-node stage of plant growth on these four cereals, and on wheat and barley blocks monitored in 1985. Subsequently, RGA numbers declined on wheat in 1985, and on wheat and rye in 1987, but population growth continued to a peak at heading or booting stages on barley and oats. Similarly, in a 1984 cultivar trial, scores for RGA infestation were consistently greater on barley and oat cultivars, than on wheat, triticale and rye, during the booting to flowering period of plant growth. The expression of resistance to RGA in older wheat and rye was thought to be partly associated with the rate of leaf senescence which reduced the area of feeding sites on sheltered lower leaves.
{"title":"Population density of the rose-grain aphid, Metopolophium dirhodum, on four cereal species in Canterbury","authors":"J. Farrell, M. Stufkens","doi":"10.1080/03015521.1988.10425654","DOIUrl":"https://doi.org/10.1080/03015521.1988.10425654","url":null,"abstract":"Abstract Similar numbers of adult winged rosegrain aphid (RGA), Metopolophium dirhodum (Walk.), per unit area were recorded as immigrants on autumn-sown wheat, oats, barley, and rye in May-June 1987 at Lincoln.RGA population growth occurred at a similar rate up to the three-node stage of plant growth on these four cereals, and on wheat and barley blocks monitored in 1985. Subsequently, RGA numbers declined on wheat in 1985, and on wheat and rye in 1987, but population growth continued to a peak at heading or booting stages on barley and oats. Similarly, in a 1984 cultivar trial, scores for RGA infestation were consistently greater on barley and oat cultivars, than on wheat, triticale and rye, during the booting to flowering period of plant growth. The expression of resistance to RGA in older wheat and rye was thought to be partly associated with the rate of leaf senescence which reduced the area of feeding sites on sheltered lower leaves.","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"1 1","pages":"299-303"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88750375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-07-01DOI: 10.1080/03015521.1988.10425652
M. Gradwell, W. Rijkse
Abstract Undisturbed samples were taken, at depths from 7 to 80 cm from six soils representative of major series on the alluvium of the Gisborne Plains. Determinations were made of hydraulic conductivity at the water contents prevailing soon after drainage, of the tension/water content relationship, and of air content at a tension of 50 cm of water (‘large pores’). Hydraulic conductivities were high to medium for soils classed as recent, and low for the gleyed recent and older gley soils; large pore contents were reasonably high for all soils, and capacities for storing plant-available water were average for five of the soils but above average for the soil on the most recent flood deposits. Replicated samples were taken at certain depths. Statistical analysis on the test results from these showed that the standard errors of the properties measured were rather low and that hydraulic conductivity was isotropic. Soil horizons containing Taupo Pumice had anomalous properties, including low density, high hydra...
{"title":"An evaluation of the physical properties of some Gisborne Plains soils for irrigation purposes","authors":"M. Gradwell, W. Rijkse","doi":"10.1080/03015521.1988.10425652","DOIUrl":"https://doi.org/10.1080/03015521.1988.10425652","url":null,"abstract":"Abstract Undisturbed samples were taken, at depths from 7 to 80 cm from six soils representative of major series on the alluvium of the Gisborne Plains. Determinations were made of hydraulic conductivity at the water contents prevailing soon after drainage, of the tension/water content relationship, and of air content at a tension of 50 cm of water (‘large pores’). Hydraulic conductivities were high to medium for soils classed as recent, and low for the gleyed recent and older gley soils; large pore contents were reasonably high for all soils, and capacities for storing plant-available water were average for five of the soils but above average for the soil on the most recent flood deposits. Replicated samples were taken at certain depths. Statistical analysis on the test results from these showed that the standard errors of the properties measured were rather low and that hydraulic conductivity was isotropic. Soil horizons containing Taupo Pumice had anomalous properties, including low density, high hydra...","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"118 1","pages":"287-294"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77412993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-07-01DOI: 10.1080/03015521.1988.10425649
S. Peltzer, K. Sivasithamparam
Abstract Soft-rot erwinias were isolated from irrigation water, soil, tubers, and stems from spring (1986) and summer (1987) crops of potato at a field in Manjimup, Western Australia. Most of the isolates from all environments in both seasons belonged to Erwinia carotovora pv. carotovora (Ecc), with the exception of those from stems of the summer crop which were predominantly (68%) Erwinia carotovora pv. atroseptica (Eca) and belonged to sero-group SGI. In spring, SGIII was recorded from all environments tested, while SGI was found only in stems and tubers. SGVI was recorded from stems (8%) and soil (15%) only in summer and in water (6.4%) only in spring. In spring, SGV, which was the predominant (28.2%) sero-group isolated from stems, was also found in water, soil, and tubers. In summer, of the SGs isolated from stems, SGIII occurred in soil and tubers and SGVI in soil. Although SGXXIX was the most common in water in both seasons, it was isolated from stems only in summer. In a pathogenicity test, repres...
{"title":"Sero-groups of Erwinia carotovora associated with water, soil, tuber, and stems of potato plants in Western Australia","authors":"S. Peltzer, K. Sivasithamparam","doi":"10.1080/03015521.1988.10425649","DOIUrl":"https://doi.org/10.1080/03015521.1988.10425649","url":null,"abstract":"Abstract Soft-rot erwinias were isolated from irrigation water, soil, tubers, and stems from spring (1986) and summer (1987) crops of potato at a field in Manjimup, Western Australia. Most of the isolates from all environments in both seasons belonged to Erwinia carotovora pv. carotovora (Ecc), with the exception of those from stems of the summer crop which were predominantly (68%) Erwinia carotovora pv. atroseptica (Eca) and belonged to sero-group SGI. In spring, SGIII was recorded from all environments tested, while SGI was found only in stems and tubers. SGVI was recorded from stems (8%) and soil (15%) only in summer and in water (6.4%) only in spring. In spring, SGV, which was the predominant (28.2%) sero-group isolated from stems, was also found in water, soil, and tubers. In summer, of the SGs isolated from stems, SGIII occurred in soil and tubers and SGVI in soil. Although SGXXIX was the most common in water in both seasons, it was isolated from stems only in summer. In a pathogenicity test, repres...","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"16 1","pages":"265-270"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85379922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-07-01DOI: 10.1080/03015521.1988.10425648
N. Nair, R. Emmett, F. E. Parker
Abstract Botrytis cinerea was frequently isolated from rapidly senescing or moribund tissues (stamens, calyptrae, immature berries and flowers or partly developed berries, miscellaneous leaf, stem and tendril pieces) of grapevine; the calyptrae being more heavily contaminated than the stamens in the flower bunches. There was a significant difference in the extent to which intact and injured berries were infected by the pathogen 3 weeks before harvest. Bunches infested with light-brown apple moth (Epiphas postvittana (Walker)) were more rapidly infected by B. cinerea. Of thecultivars tested, ‘Mataro’ was the least susceptible to predisposition wounding because the berries had a high critical turgor; however, once the berries were split, they appeared to be as susceptible to infection as the other cultivars tested. The longer the berries were exposed to surface wetness, the higher the degree of infection. A minimum temperature difference of 9°C caused a significant difference of 6-12 h in the length of the ...
{"title":"Some factors predisposing grape berries to infection by Botrytis cinerea","authors":"N. Nair, R. Emmett, F. E. Parker","doi":"10.1080/03015521.1988.10425648","DOIUrl":"https://doi.org/10.1080/03015521.1988.10425648","url":null,"abstract":"Abstract Botrytis cinerea was frequently isolated from rapidly senescing or moribund tissues (stamens, calyptrae, immature berries and flowers or partly developed berries, miscellaneous leaf, stem and tendril pieces) of grapevine; the calyptrae being more heavily contaminated than the stamens in the flower bunches. There was a significant difference in the extent to which intact and injured berries were infected by the pathogen 3 weeks before harvest. Bunches infested with light-brown apple moth (Epiphas postvittana (Walker)) were more rapidly infected by B. cinerea. Of thecultivars tested, ‘Mataro’ was the least susceptible to predisposition wounding because the berries had a high critical turgor; however, once the berries were split, they appeared to be as susceptible to infection as the other cultivars tested. The longer the berries were exposed to surface wetness, the higher the degree of infection. A minimum temperature difference of 9°C caused a significant difference of 6-12 h in the length of the ...","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"24 1","pages":"257-263"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73191173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-07-01DOI: 10.1080/03015521.1988.10425644
D. Jansson, I. Warrington
Abstract Kiwifruit (Actinidia deliciosa ‘Matua’) vines were grown under five maximum/ minimum temperature regimes (21/17,21/13,21/7, 17/7 and 13/7°C) from budbreak to post-flowering. Assessments were made of the germinability and viability of pollen extracted from flowers off these vines. Percentage germination was evaluated, after 3.5 h incubation, under different incubation temperatures ranging from 7 to 35°C. Highest germination (90%) was obtained under the warmest (21/17°C) development temperature regime. Percentage germination declined as the development temperature decreased and was only 25% at 13/7°C. Maximum percentage germination under all development treatments occurred at incubation temperatures between 22 and 28°C; very little germination occurred at and below 13°C or at 35°C. Pollen tube distortions were common atc 35°C. Percentage germination was similar to percentage viability for pollen from warm development temperatures but only half of the viable pollen from the coolest temperature germi...
{"title":"The influence of temperature during floral development and germination in vitro on the germinability of kiwifruit pollen","authors":"D. Jansson, I. Warrington","doi":"10.1080/03015521.1988.10425644","DOIUrl":"https://doi.org/10.1080/03015521.1988.10425644","url":null,"abstract":"Abstract Kiwifruit (Actinidia deliciosa ‘Matua’) vines were grown under five maximum/ minimum temperature regimes (21/17,21/13,21/7, 17/7 and 13/7°C) from budbreak to post-flowering. Assessments were made of the germinability and viability of pollen extracted from flowers off these vines. Percentage germination was evaluated, after 3.5 h incubation, under different incubation temperatures ranging from 7 to 35°C. Highest germination (90%) was obtained under the warmest (21/17°C) development temperature regime. Percentage germination declined as the development temperature decreased and was only 25% at 13/7°C. Maximum percentage germination under all development treatments occurred at incubation temperatures between 22 and 28°C; very little germination occurred at and below 13°C or at 35°C. Pollen tube distortions were common atc 35°C. Percentage germination was similar to percentage viability for pollen from warm development temperatures but only half of the viable pollen from the coolest temperature germi...","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"10 1","pages":"225-230"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89028305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-07-01DOI: 10.1080/03015521.1988.10425655
J. Farrell, M. Stufkens
Abstract A non-glaucous leaf variant of a spring barley (Hordeum vulgare L.) breeding line was shown to support significantly fewer rose-grain aphids (Metopolophium dirhodum (Walk.)) than did cv. Triumph or glaucous-leaf variants of the same line. Aphid resistance in the non-glaucous line was associated with reduced immigration by winged rose-grain aphids.
{"title":"Resistance to the rose-grain aphid (Metopolophium dirhodum (Walk.)) in non-glaucous spring barley","authors":"J. Farrell, M. Stufkens","doi":"10.1080/03015521.1988.10425655","DOIUrl":"https://doi.org/10.1080/03015521.1988.10425655","url":null,"abstract":"Abstract A non-glaucous leaf variant of a spring barley (Hordeum vulgare L.) breeding line was shown to support significantly fewer rose-grain aphids (Metopolophium dirhodum (Walk.)) than did cv. Triumph or glaucous-leaf variants of the same line. Aphid resistance in the non-glaucous line was associated with reduced immigration by winged rose-grain aphids.","PeriodicalId":19285,"journal":{"name":"New Zealand journal of experimental agriculture","volume":"27 1","pages":"305-306"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78168702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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