scholarly journals Ocena tolerancji wybranych gatunków traw i roślin motylkowatych na zasolenie środowiska [Salt tolerance of grasses and leguminous plants]

2015 ◽  
Vol 29 (1) ◽  
pp. 85-98 ◽  
Author(s):  
Maria Zawadzka
Keyword(s):  
Salt Tolerance ◽  
Lolium Perenne ◽  
Festuca Pratensis ◽  
Leguminous Plants ◽  
Lolium Perenne L ◽  
Interspecific Differences ◽  
Medicago Lupulina ◽  
Melilotus Albus ◽  
High Level ◽  
Trifolium Resupinatum

11 species of grasses and 10 species of leguminous plants were tested for salt tolerance. The biotest of germination viability and capacity in soline water was performed. The results proved usefulness of using seeds as bioin-dicators and allowed to show the significant interspecific differences. The following species – <i>Lolium perenne, L. multiflorum, Festuca pratensis, Arrhenetherum elatius, Trifolium resupinatum, T. incarnatum</i> and <i>Melilotus albus</i> show high level of tolerance. The less tolerant species were: <i>Festuca ovina, Agrostis alba, Trifolium repens, Lotus corniculatus, Medicago lupulina and Medicago sativa</i>.

Translocation from flowering to daughter tillers in perennial ryegrass (Lolium perenne L.)

2002 ◽  
Vol 53 (1) ◽  
pp. 21 ◽  
Author(s):  
C. Matthew
Keyword(s):  
New Zealand ◽  
Birth Weight ◽  
Lolium Perenne ◽  
Late Pregnancy ◽  
Early Summer ◽  
High Rate ◽  
Lolium Perenne L ◽  
Feeding Level ◽  
High Level ◽  
Summit Metabolic Rate

Recent New Zealand cultivars of Lolium perenne often have a high rate of tiller death and replacement in late spring–early summer. A majority of the new tillers are daughter tillers of flowering tillers. Previous research has led to a hypothesis that defoliation may influence the amount of assimilate exported by flowering tillers, and hence the rate of daughter tiller formation. To test this hypothesis, flowering tillers of of nutrition that enabled the dam to gain 100 g/day of conceptus-free liveweight in addition to expected fetal growth) during the mid pregnancy (post-shearing) period (from Day 70 of pregnancy (P70) until P101). At the end of this period ewes were offered either maintenance or a high level of nutrition during late pregnancy (P102–P140). Pregnancy shearing was found to increase lamb birthweight (average birthweight 5.4±0.1 v. 5.1± 0.1 kg) without differentially affecting the birthweight of singles or twins. Dam feeding level post-shearing did not affect the birthweight response to mid pregnancy shearing. Pregnancy shearing treatment had no effect on the summit metabolic rate of twin lambs. However, when results of this study are compiled with those of previous mid to late pregnancy shearing studies under similar conditions, it appears that the birth weight response from pregnancy shearing is greatest where lightweight lambs are born to unshorn (control) ewes.

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