Effect of growth and cultivar on alfalfa digestibility in a multi-site trial

Julier, Bernadette; Huyghe, C.

doi:10.1051/agro:19970905

Cited by 33 publications

(34 citation statements)

References 19 publications

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“…Many reports have been documented regarding genetic diversity of Medicago sativa using different traits; morphological and yield (Julier and Huyghe, 1997;Bolaños-Aguilar et al, 2000;Julier et al, 2000), digestibility (Crochemore et al, 1996), nutritive content (Lenssen et al, 1991), histological (Guines et al, 2003), RAPD markers (Crochemore et al, 1998, AFLP markers (Riday et al, 2003), SSR markers (Diwan et al, 2000) and allozyme markers (Jenczewski et al, 1999). These studies have shown that alfalfa was characterized by a high inter-population variability.…”

Section: Discussionmentioning

confidence: 99%

Germination and emergence variability of alfalfa (Medicago sativa L.) landraces collected in Southern Tunisia oases

Benabderrahim

Haddad

Hamza

et al. 1970

Span. j. agric. res.

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Alfalfa (Medicago sativa L.) is one of the most important forage crops in the world. It has been originated from the Caucasus region (Michaud et al., 1988). The species presents purple flowers, a tap root, an erect growth habit, coiled pods and no winter dormancy. This plant improves the yield and quality of the following crops by atmospheric nitrogen fixation (Bruulsema and Christie, 1987 AbstractVariability in germination under controlled conditions with and without salt, seeds characteristics and field emergence were evaluated for 20 landraces of Medicago sativa ssp sativa, a forage legume collected from three sites in Tunisia. Highly significant differences were recorded among the landraces (p < 0.001) for all the characters studied except tegument colour. Number of seeds produced per plant ranged between 378 and 460 seeds g -1 . Emergence responses of seeds were different among landraces and sites and their values ranged between 12 to 45%. Salt stress (150 mM) caused substantial reduction in final and rate of germination of all the landraces with an average decline of 62.4 and 69.7%, respectively. Final germination values ranged from 26.5 to 75.75% when supplied distilled water. However, final germination values ranged from 10.75 to 32.5% when the seeds were exposed to saline water (150 mM). Rate of germination ranged from 12.75 to 63.25% and from 6.25 to 21.25% at non-saline and salt stress, respectively. Cluster analysis separated the 20 landraces into four clusters. Three landraces in the first cluster had the lowest germination and the greatest field emergence. One landrace composed the second cluster and showed both high germination and field emergence. Two landraces in the third cluster presented greater germination and low emergence. The other landraces constituted the fourth cluster and had intermediates emergence and germination.Additional key words: arid land; diversity; salt stress; seeds. Resumen Variabilidad en la germinación y en la emergencia de variedades autóctonas de Medicago sativa en diferentes oasis de TúnezSe evaluó la germinación en laboratorio con y sin estrés salino, así como las características de las semillas y la emergencia de 20 poblaciones de la leguminosa forrajera Medicago sativa ssp sativa, procedentes de tres localidades de Túnez. Se observaron diferencias altamente significativas entre las poblaciones (p < 0,001) en todos los caracteres estudiados excepto en el color del tegumento. El número de semillas por gramo varió entre 378 y 460. La emergencia de las semillas fue diferente entre las poblaciones y las localidades (variaron entre el 12 y el 45%). El estrés salino (150 mM) causó una fuerte reducción en todas las poblaciones, tanto en la germinación final como en el porcentaje de germinación, con una reducción media del 62,4 y 69,7%, respectivamente. Los valores de germinación finales variaron entre 26,5 y 75,75% y entre 10,75 y 32,5% con agua destilada y estrés salino, respectivamente. El porcentaje de germinación varió desde el 12,75 al 63,25% y del 6,25 al 21,25% en ...

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Section: Discussionmentioning

confidence: 99%

Germination and emergence variability of alfalfa (Medicago sativa L.) landraces collected in Southern Tunisia oases

Benabderrahim

Haddad

Hamza

et al. 1970

Span. j. agric. res.

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“…As already noted, alfalfa leaves have higher nutritive value and intake potential when compared to stems. Julier and Huyghe, (1997) also stated that digestibility of alfalfa cultivars showed differences as depending on their leaf/stem ratios. The DDM contents determined for alfalfa cultivars in our study were similar to previous reports Avci et al (2007);Canbolat et al (2006).…”

Section: Crude Protein Yieldmentioning

confidence: 99%

Assessment of yield and quality characteristics of alfalfa (Medicago sativa L.) cultivars with different fall dormancy rating

Avcı

Hatipoglu

Çinar

et al. 2017

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This research was conducted to determine performances of seven alfalfa cultivars with different fall dormancy rates in terms of dry matter yield and some quality parameters under Mediterranean conditions throughout the years of 2007-2009. In the study, cultivars were evaluated for dry matter yield (DMY), leaf/stem ratio (LSR), crude protein (CP) content, crude protein yield (CPY), acid detergent fiber (ADF), neutral detergent fiber (NDF), digestible dry matter (DDM) content and relative feed value (RFV). According to average of two year results, there were significant differences among alfalfa cultivars in terms of all characters studied. Mean DMY, LSR, contents of CP, ADF, NDF, DDM and RFV were determined as 18.147 t ha -1 , 0.82, 17.4 %, 41.0 %, 49.0 %, 56.9 % and 114. The highest DMY averaged over two years was obtained from cultivar Nimet while lowest one was obtained from Magnum 5. As a dormant cultivar, Magnum 5 was superior in terms of LSR and CP content to the other alfalfa cultivars and it was lower in ADF and NDF content than the others. It was concluded that cultivar Nimet with the highest DMY and CPY yields can be recommended as a non-dormant cultivar for farmers in regions of Turkey with the Mediterranean climate.

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“…Differences in stem digestibility among alfalfa populations (Julier et al 1996), cultivars (Mowat et al 1965;Albrecht et al 1987;Buxton et al 1987;Julier and Huyghe 1997), plant introduction accessions , and phenotypes (Volenec and Cherney 1990) have been reported.…”

Section: Ivdmd and Tn Concentrationsmentioning

confidence: 99%

“…Because approximately two-thirds of the protein in alfalfa herbage is in leaves, Broderick (1993) concluded that selection based on leaf protein may yield more useful results. However, genetic variability for LWR among alfalfa cultivars (Julier and Huyghe 1997;Julier et al 2000;Tremblay et al 2000) may also influence RUP concentration in the whole plant.…”

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Leaf and stem dry matter digestibility and ruminal undegradable proteins of alfalfa cultivars

Tremblay¹,

Bélanger²,

McRae³

et al. 2002

Can. J. Plant Sci.

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R. 2002. Leaf and stem dry matter digestibility and ruminal undegradable proteins of alfalfa cultivars. Can. J. Plant Sci. 82: 383-393. Increased dry matter digestibility and ruminal undegradable protein (RUP) concentration are traits highly ranked to improve the nutritive value of forage legumes. Whole-plant, leaf, and stem samples of 27 alfalfa cultivars grown in eastern Canada were analysed for total nitrogen (TN), in vitro RUP, and in vitro dry matter digestibility (IVDMD). The objectives were to determine if significant variation exists among these cultivars, and to establish the relationship between nutritive value parameters of leaves and stems, and those of whole plants. Cultivars were seeded in triplicate on 2 consecutive years and evaluated during the 2 subsequent production years with two harvests per year. There were significant differences among cultivars in IVDMD of stems and plants in spring growth and summer regrowth. Cultivar differences in leaf IVDMD were significant only in spring growth, but this variation was negligible in practical terms. Cultivars with high forage IVDMD also had high stem IVDMD and this relationship was stronger in summer regrowth. Alfalfa plant IVDMD is a function of stem digestibility and the leaf weight ratio (LWR). Cultivar differences were significant for plant TN in spring growth and summer regrowth, and for stem TN in spring growth only. Leaf (270 to 306 g kg -1 TN) and stem (242 to 287 g kg -1 TN) RUP concentrations varied among cultivars in spring growth. Cultivars with high stem RUP also had high leaf RUP concentration but differences in plant RUP were not always attributed to leaf and stem RUP. The RUP concentration was on average 10% higher in leaves than in stems in spring growth, and this difference reached 15% in summer regrowth. The LWR varied among cultivars in spring growth and summer regrowth, and it was positively related to plant RUP in spring growth. Improved whole-plant RUP concentration is unlikely to be achieved by simply selecting for high RUP in leaves or stems; LWR has a principal role in determining alfalfa plant RUP concentration.Key words: Dry matter digestibility, ruminal undegradable proteins, alfalfa, genetic variation, stems, leaves Tremblay, G. F., Bélanger, G., McRae, K. B. et Michaud, R. 2002. Digestibilité de la matière sèche et protéines non dégrad-ables dans le rumen des feuilles et des tiges de cultivars de luzerne. Can. J. Plant Sci. 82: 383-393. Une digestibilité de la matière sèche et une concentration en protéines non dégradables au niveau du rumen (RUP) élevées sont parmi les premiers critères permettant d'améliorer la valeur nutritive des légumineuses fourragères. Les plantes, les feuilles et les tiges de 27 cultivars de luzerne cultivés dans l'est du Canada ont été analysés pour leur concentration en azote total (TN) et en RUP, ainsi que pour la digestibilité in vitro de la matière sèche (IVDMD). Le but était de déterminer s'il existe une variation significative entre les cultivars, et d'établir la relation entre les paramè...

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Effect of growth and cultivar on alfalfa digestibility in a multi-site trial

Cited by 33 publications

References 19 publications

Germination and emergence variability of alfalfa (Medicago sativa L.) landraces collected in Southern Tunisia oases

Germination and emergence variability of alfalfa (Medicago sativa L.) landraces collected in Southern Tunisia oases

Assessment of yield and quality characteristics of alfalfa (Medicago sativa L.) cultivars with different fall dormancy rating

Leaf and stem dry matter digestibility and ruminal undegradable proteins of alfalfa cultivars

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