Open AccessVigour and variability of phytotron‐cultivated monohybrid barley
Author(s) -
GUSTAFSSON ÅKE,
EKMAN GUNNAR,
DORMLING INGEGERD
Publication year - 1973
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.1973.tb01060.x
Subject(s) - phytotron , biology , photoperiodism , homogeneity (statistics) , degree (music) , horticulture , botany , agronomy , zoology , mathematics , statistics , physics , acoustics
This investigation represents a detailed analysis of earlier data on phytotron‐cultivated barley (Hereditas 70: 185–216). Ten characters were studied under 14 (11) different climatic conditions. The materials comprised four categories, each consisting of 98 individuals: (1) Bonus, (2) Mari, (3) monohybrid Bonus X Mari cultivated with Bonus, (4) monohybrid Bonus X Mari or Mari X Bonus cultivated with Mari. The monohybrid material was superior in vigour to Bonus, the original parent, in 38 % of the comparisons. Mari was superior to Bonus only in 14% of the comparisons. The analysis confirms the remarkable similarity of the replicated monohybrid materials (BM of the Bonus trucks versus BM and MB of the Mari trucks) with regard to vigour. There was a difference between the two groups of replications of only 1 %. In 6 of 10 characters the differences were even smaller. The close agreement was found for slightly as well as highly variable characters. The degree of intraclimatic variability is greatly influenced by genotype as well as by photoperiod changes. In contrast, temperature conditions do not markedly influence the frequency of high variation coefficients (v> 0.100). Monohybrid variability is to a certain degree dependent on the partner in cultivation, whether Bonus or Mari. This leads to a definite heterogeneity, respectively homogeneity, of the monohybrid variation coefficients for photoperiod changes.