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Yield Components in Random and Selected Sugarcane Populations
Author(s) -
James Norman I.
Publication year - 1971
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/cropsci1971.0011183x001100060043x
Subject(s) - stalk , cane , biology , saccharum , population , agronomy , yield (engineering) , population density , botany , horticulture , demography , biochemistry , materials science , sugar , sociology , metallurgy
Path‐coefficient analyses indicated stalk number was the most important component of yield of millable stalks per unit area in three sugarcane (Saccharum spp.) populations. Stalk diameter ranked second in order of importance in all three populations; stalk length ranked third in two populations and fourth in one population. Stalk density contributed less to cane yield than the other three variables. Stalk number, stalk diameter, and stalk length accounted for 82, 84, and 84% of the variation in yield in a random plant‐cane seedling population, random first ratoon clonal population, and selected plant‐cane clonal population, respectively. A negative association between stalk diameter and stalk number, and between stalk diameter and stalk density resulted in a low frequency of large‐diameter highyielding clones in these populations. Thus, a compromise in stalk diameter may be desirable to increase the frequency of high‐yielding clones in selected populations