Agronomic Traits Influencing Forage and Seed Yield in Alfalfa<sup>1</sup>

Liang, G. H.; Riedl, W. A.

doi:10.2135/cropsci1964.0011183x000400040019x

Cited by 10 publications

(3 citation statements)

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“…water) interfere with flowering date and harvest index (data not presented) in grass and legume species influencing photosynthesis and consequently the biological mechanisms which support persistence, dry matter and seed yield. Thus, in agreement with the results obtained by Liang et al [11], Gumaniuc [6] and Lorenzetti [12], it is possible to assume that the genetic basis of dry matter, seed yield and their components are specific and their expression is influenced by environmental factors.…”

Section: Resultssupporting

confidence: 88%

Influence of agronomic factors on the relationship between forage production and seed yield in perennial forage grasses and legumes in a Mediterranean environment

Martiniello

1998

Agronomie

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Section: Resultssupporting

confidence: 88%

Influence of agronomic factors on the relationship between forage production and seed yield in perennial forage grasses and legumes in a Mediterranean environment

Martiniello

1998

Agronomie

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“…In alfalfa, a significant positive phenotypic correlation between seed and forage yield was observed by Boçsa and Buglos [4] and Melton [26], while Heinrichs [15] found no relationship between seed yield and dry matter yield. A positive relationship may be due to architectural attributes such as tall and lodging tolerant stems which would enhance both characters [13,22]. The phenotypic correlation between harvest index and seed yield is also highly significant [33].…”

Section: Introductionmentioning

confidence: 99%

Genetic variation for seed yield and its components in alfalfa (Medicago sativa L.) populations

et al. 2000

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International audienceGenetic variation in seed yield and its components was investigated in alfalfa (Medicago sativa L.) in two experiments established in a spaced plant design. The first experiment evaluated the among-population genetic variation in a set of 45 cultivated populations. It showed a significant population effect for all the characters evaluated with a different behavior among the Mediterranean and the Nordic materials while the population $\times$ year interaction was only significant for the seed yield per plant. A second experiment evaluated the genetic variation among and within-populations in a set of 11 populations. The among- and within-population effects were significant for almost all the components. The among-population variance accounted for 5 to 31% of the total genetic variance for seed yield components, while the within-population variance explained 69 to 95% . In both experiments, the broad-sense heritabilities of characters varied from 0.27 to 0.43. The number of inflorescences, seed number per plant and seed weight per inflorescence showed high phenotypic and genetic correlations with seed yield per plant. The possibility of using the seed weight per inflorescence as a selection criterion is discussed.Variabilité génétique intra- et inter-population pour le rendement grainier et ses composantes chez la luzerne. Deux essais ont été implantés, en plantes isolées, pour évaluer la variabilité génétique pour le rendement grainier et ses composantes chez la luzerne (Medicago sativa L.). Le premier essai a mis en évidence une variabilité génétique inter-population au sein d'un ensemble de 45 populations cultivées pour toutes les composantes évaluées avec un comportement différent des types nordiques et des types méditerranéens. L'interaction année $\times$ population n'est significative que pour le rendement et le nombre de graines par plante. Le deuxième essai a évalué la variabilité génétique inter- et intra-population dans un ensemble de 11 populations. Les effets inter- et intra-population ont été significatifs pour toutes les composantes. La variance inter-population représente de 5 à 31 % de la variance génétique totale, et la variance intra-population de 69 à 95 % pour les différentes composantes. Les héritabilités au sens large des composantes ont varié de 0,27 à 0,43. Le nombre d'inflorescences et le nombre de graines par plante et le poids de graines par inflorescence sont fortement corrélés phénotypiquement et génétiquement avec le rendement grainier par plante dans un dispositif en plantes isolées. La possibilité d'utiliser certaines composantes relatives à l'inflorescence comme critère de sélection pour le rendement grainier est discutée

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“…Tiller number is the most basic morphological index for evaluating forage adaptation, and it affects forage yield through population density (Al‐Tahir, 2014); plant height is one of the main indicators of forage growth and yield (Liang & Riedl, 1964). The results of the present study showed that mowing significantly promoted the number of tillers per plant in P. dilatatum .…”

Section: Discussionmentioning

confidence: 99%

Evaluation of genetic diversity and production adaptability in different germplasms of Paspalum dilatatum

et al. 2023

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Paspalum dilatatum is an excellent warm-season forage grass and soil conservation plant in subtropical regions. However, information on P. dilatatum cultivation in southwestern China is limited. A preliminary evaluation of the genetic diversity and adaptability of six P. dilatatum germplasms was conducted in Guizhou based on inter simple sequence repeat (ISSR) markers and field trials. Fifteen polymorphic primers were screened from 50 ISSR primers. A total of 141 bands were generated, 124 of which were polymorphic, yielding 88.63% polymorphic bands. The number of polymorphic loci detected for the different germplasms ranged from 23 to 61, and the percentage of polymorphic loci was 40.67%. The mean number of alleles was 1.23, and the effective allele number was 1.15. Nei's genetic diversity index was 0.08. The Shannon information index was 0.12, and the genetic similarity coefficient (GSC) ranged from 0.6002 to 0.8955, indicating a relatively rich genetic base among the germplasms. The unweighted pair group method with arithmetic mean approach was used to construct the clustering map. Using a GSC of 0.83 as the threshold value, the six germplasm materials were divided into four clusters, indicating that ISSR molecular markers can be effectively applied to analyze the genetic diversity of P. dilatatum germplasms. Cluster analysis of 12 growth characteristics of the germplasms of P. dilatatum showed that germplasm 4 exhibited strong tillering ability and a high crude protein content. Germplasm 3 showed high plant height, fresh yield and hay yield. Germplasm 1 showed the lowest forage yield and crude protein content. Germplasms 2, 5 and 6 showed excellent crude protein and crude fat contents; the remaining indicators showed intermediate performance. This study provides important references for the utilization and variety selection of introduced P. dilatatum resources in the karst areas of Guizhou.

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Agronomic Traits Influencing Forage and Seed Yield in Alfalfa¹

Cited by 10 publications

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Influence of agronomic factors on the relationship between forage production and seed yield in perennial forage grasses and legumes in a Mediterranean environment

Influence of agronomic factors on the relationship between forage production and seed yield in perennial forage grasses and legumes in a Mediterranean environment

Genetic variation for seed yield and its components in alfalfa (Medicago sativa L.) populations

Evaluation of genetic diversity and production adaptability in different germplasms of Paspalum dilatatum

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Agronomic Traits Influencing Forage and Seed Yield in Alfalfa1

Cited by 10 publications

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Influence of agronomic factors on the relationship between forage production and seed yield in perennial forage grasses and legumes in a Mediterranean environment

Influence of agronomic factors on the relationship between forage production and seed yield in perennial forage grasses and legumes in a Mediterranean environment

Genetic variation for seed yield and its components in alfalfa (Medicago sativa L.) populations

Evaluation of genetic diversity and production adaptability in different germplasms of Paspalum dilatatum

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Agronomic Traits Influencing Forage and Seed Yield in Alfalfa¹