The effects of aluminium and pH on the growth of a range of temperate grass species and cultivars

Edmeades, D. C.; Wheeler, D. M.; Christie, R. A.

doi:10.1007/978-94-011-3438-5_102

Cited by 29 publications

(24 citation statements)

References 14 publications

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“…hill ryegrasses grown from seed from a polycross of 1500 plants collected from North Island hill pastures (Wedderburn et al 1989b) 2. a Whatawhata selection derived from crossing plants from the hill country population that had demonstrated tolerance to moisture stress (Wedderburn et al 1990) 3. the cultivar Yatsyn 4. a ryegrass ecotype selected from dairy pastures at least 20 years old 5. a ryegrass selected for tolerance of aluminium in hydroponic culture (Edmeades et al 1991) and showing superior performance under drought stress in root bins with a reconstructed acid profile (Wheeler et al 1992). …”

Section: Methodsmentioning

confidence: 99%

Root growth patterns of perennial ryegrasses under well-watered and drought conditions

Wedderburn

Crush

Pengelly

et al. 2010

New Zealand Journal of Agricultural Research

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A boroscope and mini-rhizotrons were used to explore root growth patterns in five different ryegrasses grown outdoors under simulated field edaphic conditions including drought. Few major differences in root counts were found among the ryegrasses. The seasonal patterns of root counts in well-watered treatments showed an autumn peak that was later (or even suppressed) as autumn soil temperatures increased in consecutive years. Seasonal patterns were not measurable at more than 7 cm depth down the profile. The summer drought resulted in an increase in root counts right down the profile, which started about a month after the drought began. This was followed by rapid death of roots in the top 15 cm of soil but lower death rates deeper in the soil. After rewetting of the soil, there was a delay of approximately 1 month before a rapid increase in root production occurred. This overcame the apparent high soil temperature inhibition of autumn root growth in the well-watered control treatment.

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Section: Methodsmentioning

confidence: 99%

Root growth patterns of perennial ryegrasses under well-watered and drought conditions

Wedderburn

Crush

Pengelly

et al. 2010

New Zealand Journal of Agricultural Research

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“…Although screening rye-grass material from a more acid environment might increase the number of plants selected, it is noted that 3 of the plants selected for Al tolerance performed better in the reconstructed acid soil profiles before and after drought than those plants selected from the hill country, some of which would have been grown on an acid soil profile similar to that reconstructed in the bins. Also, the fact that A1 tolerance was not related to vigour (Table 8) and that the established cultivars were selected for high vigour could explain why many of the established cultivars were reported as being moderately sensitive to A1 by Edmeades et al (1991b).…”

Section: Discussionmentioning

confidence: 99%

“…Perennial rye-grass (Lolium perenne L.) seedlings from 510 lines were screened for AI tolerance using a solution culture technique (Edmeades et al, 1991b). Each line consisted of the progeny from individual plants from a polycross which was part of a program to breed high producing cultivars.…”

Section: Initial Screenings and Plant Selectionmentioning

confidence: 99%

“…After germination on filter paper, seedlings were placed in pots suspended over a plastic tub (15 pots per tub) containing 40 litres of nutrient solution. The technique, analytical methods and solution composition are described elsewhere (Edmeades et al, 1991b). In general, nutrient concentrations were maintained at (p,M) 500Ca, 100Mg, 300K, 600N (150NH 4, 450NO3), 600SO 4, 2.5P, 5Fe, 6Mn, 1Zn, 1 BO 3 and 0.1Cu and the solution pH maintained at 4.7 throughout the course of the experiment.…”

Section: Initial Screenings and Plant Selectionmentioning

confidence: 99%

“…However, Edmeades et al (1991b) reported that perennial rye-grass was moderately sensitive to A1 (yield reduced by 50% by 1-4/xM A13+ activity) and that the NZ derived cultivars were more sensitive to A1 than the Australian and European derived cultivars tested. Earlier work (Edmeades et al, 1991a) had established that NZ derived cultivars of perennial rye-grass were more sensitive to A1 than white clover (Trifolium repens), also a important component of many permanent pastures.…”

Section: Introductionmentioning

confidence: 99%

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Screening perennial rye-grass from New Zealand for aluminium tolerance

et al. 1992

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Approximately 11,500 seedlings from 510 lines of perennial rye-grass (Lolium perenne L.) were screened for tolerance to aluminium (A1) using a low ionic strength 'still' solution culture technique. Although none of the individual lines were consistently more tolerant than any other line, 23 individual plants were selected from 13 lines for superior vigour and colour in the presence of A1.The growth of three of these elite plants was examined on a reconstructed acid soil profile protected from prevailing weather conditions allowing control of the moisture status of the soil. The plants selected for Ai tolerance in solution culture had significantly higher yields before drought and after recovery from drought than the rye-grass cultivars Ariki, Ellett and Droughtmastcr and 4 other hill country lines which were previously selected for high yields in the presence and absence of nitrogen, and for drought and grassgrub resistance. Of the total number of plants tested from all cultivars and lines, <2% had yields that were greater than one third of the yields of the 3 AI tolerant plants. The better performance of the A1 tolerant plants is attributed to better root growth in the acid soil.Three polycrosses were made from the 23 A1 tolerant plants selected in solution culture. When tested in solution culture, the yields of the half-sib families in the presence of AI averaged approximately twice that of Grasslands Nui in one experiment, but were similar to Grasslands Nui in another. Heritability of total yield and relative yield in the presence of AI, calculated from half-sib measurements on a single replicate basis, averaged 0.33 and 0.24 respectively. Individual plants from the half-sib families from two polycrosses were grown in a nursery and heading date and vigour recorded. There were no significant differences in heading data between the polycross lines and either of the cultivars Grasslands Nui or Yatsyn. Although there were significant differences in spring vigour between lines, they were not significantly different from either Grasslands Nui or Yatsyn. Twelve of the polycross lines showed decreased vigour in summer and autumn. This decline in vigour was attributed to damage from Argentine stem weevil (Listronotus bonariensis) as a consequence of low levels of lolium endophyte ( Acremonoim lolii ).

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The effect of aluminium concentration on root hairs in white clover (Trifolium repens L.)

Care¹

1995

Plant-Soil Interactions at Low pH: Principles and Management

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The effects of aluminium and pH on the growth of a range of temperate grass species and cultivars

Cited by 29 publications

References 14 publications

Root growth patterns of perennial ryegrasses under well-watered and drought conditions

Root growth patterns of perennial ryegrasses under well-watered and drought conditions

Screening perennial rye-grass from New Zealand for aluminium tolerance

The effect of aluminium concentration on root hairs in white clover (Trifolium repens L.)

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