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Heritability of Flowering in Sugarcane 1
Author(s) -
Lyrene P. M.
Publication year - 1977
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1977.0011183x001700030030x
Subject(s) - heritability , biology , randomized block design , saccharum , variance components , horticulture , field experiment , botany , veterinary medicine , genetics , mathematics , statistics , medicine
The heritability of flowering was studied in sugarcane ( Saccharum spp. L.) by observing the percentage of stools that flowered in 10 vegetatively propagated commercial clones, in 25 F 1 populations obtained by crossing five of the clones as females with the other five used as males, and in S 1 populations from the five paternal parents. All plants were field grown as spaced stools in a randomized block experiment with six replications. Populations within blocks were represented by 17 spaced stools each. Flowering frequency among parental clones ranged from 3.2% of all stools of CP 63‐588 and CP 70‐300 to 96.9% of all stools of CP 52‐68. Overall, 49% of all parental stools, 35% of all F 1 seedlings, and 17% of all S 1 seedlings flowered. Estimates of heritability obtained from F 1 ‐ midparent regression were 54 to 60%. General combining ability was more important than specific combining ability in explaining the variance among F 1 populations; the variance component for general combining ability was 4.4 times larger than that for specific combining ability.