+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Genetic and soil moisture effects on the branching root trait in alfalfa medicago sativa

Genetic and soil moisture effects on the branching root trait in alfalfa medicago sativa

Crop Science 21(1): 15-18

The inheritance of the branching-root trait in alfalfa, M. sativa L., was studied in diallels at 2 field locations. Diallel progenies of 7 clones were grown in spaced plantings at Champaign-Urbana and Brownstown, Illinois [USA]. Roots of 6 mo. old alfalfa branched more at Brownstown than Champaign-Urbana. At Champagin-Urbana, significant differences were found for general.sbd.but not specific.sbd.combining ability. At Brownstown, differences were significant for specific combining ability, but not for general combining ability. General combining ability .times. location interaction also was significant. Reciprocal and selfing effects were not important at either location. Regression estimates of offspring on S1 parent were 0.128 and 0.002 for the Brownstown and Champaign-Urbana locations, respectively. A greenhouse experiment was conducted to determine whether moisture stress contributes to the genotype .times. environment interaction for the branching-root trait. Progeny of 6 crosses, whose parents represented a wide range in rooting habit, were grown in pots with soil moisture levels increased daily to -1/3 bar onto 50% of the -1/3 bar moisture level. Low moisture levels resulted in plant stress exhibited as a decrease in plant height and dry weight. Plants grown in the low moisture regime also had a lower incidence of branching roots. The genotype .times. moisture interaction was nonsignificant. Among moisture-stressed plants, ehight and weight were positively correlated with root branching (r = 0.81 and 0.60, respectively. Both are significant at the 0.01 level). For unstressed plants, only plant weight was significantly correlated with the branching root habit (r = 0.49, significant at the 0.05 level).

(PDF emailed within 1 workday: $29.90)

Accession: 005512354

Download citation: RISBibTeXText

Related references

Development of root branching in 3 alfalfa medicago sativa cultivars. Crop Science 20(6): 807-809, 1980

Influence of soil moisture and weed density on clover root curculio sitona hispidulus larval stress to alfalfa medicago sativa. Journal of Agricultural Entomology 2(4): 370-377, 1985

Root response to soil environments and effects of applied boron among four cultivars of alfalfa (Medicago sativa L.). Dissertation Abstracts International, B Sciences and Engineering 46(2): 353B, 1985

Effect of moisture level in the root pattern of alfalfa Medicago sativa. Irrigation science(3): 197-207, 1982

Genetic proof of 4 enzymatic loci in di- and tetraploid alfalfa (Medicago sativa L.) Medicago sativa subsp. coerulea, Medicago sativa subsp. sativa.1. Agronomie: sciences des productions vegetales et de l'environnement(2): 133-148, 1982

Effect of divergent selection for root weight on genetic variation for root and shoot characters in alfalfa medicago sativa. Crop Science 24(3): 570-573, 1984

Effect of soil moisture and ph on the response of alfalfa medicago sativa cultivar saranac to molybdenum. Canadian Journal of Soil Science 66(3): 421-436, 1986

Establishment of sod seeded alfalfa medicago sativa at various levels of soil moisture and grass competition. Agronomy Journal 73(3): 560-565, 1981

Release of soluble protein and nitrogen in alfalfa medicago sativa 1. influence of growth temperature and soil moisture. Crop Science 21(6): 843-849, 1981

Effect of soil matric potential on phytophthora root rot of alfalfa medicago sativa. Phytopathology 72(5): 543-548, 1982

Effect of irrigation with saline water on root distribution and forage yield by different root types of alfalfa (Medicago sativa) under different soil salinity conditions with zero leaching. Cahiers Options Mediterraneennes 18: 119-125, 1996

Effects of root knot nematodes on phytophthora megasperma f sp medicaginis root rot of alfalfa medicago sativa. Phytopathology 70(7): 694, 1980

Genetic variability for root characters in alfalfa medicago sativa populations differing in winter hardiness. Crop Science 24(3): 465-468, 1984

Organelle based molecular analyses of the genetic relatedness of cultivated alfalfa (Medicago sativa L.) to Medicago edgeworthii Sirjaev, and Medicago ruthenica (L.) Ledebour. Euphytica 125(1): 51-58, 2002