Abstract
Leaf angles, frequency distribution of leaf area inclinations, leaf area index, amount of intercepted radiation, biological, vegetative and grain yields and grain yield proportion of biological yield were determined in maize stands of two population densities, 55 555 plants ha−1 (S 1), and 80 000 plants ha−1 (S 2). Also the effect of the artificial change of leaf angle upon these indices was studied. We classified normal maize stand (N) as the interstage between a planophile and a plagiophile type of canopy, that with artificially changed leaf angle (V) as an erectophile type of canopy. The relative interception of the incoming radiation in the variantsV S 1 andV S 2 was lower than in the variantsN S 1 andN S 2. The variantsV in comparison with variants N increased grain yield and biological yield.
Abstract
U porastu kukurice sme zistili pri dvoch hustotách 55 555 rastlín ha−1 (S 1) a 80 000 rastlín ha−1 (S 2) frekvenciu distribúcie inklinácií listovej plochy, percento absorbovaného svetla, listové uhly u jednotlivých inzercií, výnos biologický, vegetatívnej hmoty a zrna, koeficient hospodárskej efektívnosti fotosyntézy a vplyu umelej zmeny, listového uhla na tieto ukazovatele. Normálny porast kukurice (N) sme klasifikovali ako prechod medzi planofilným a plagiofilným typom zápoja, porast s umele zmeneným listovým uhlom (V) ako erektofilný typ zápoja. VariantyV S 1 andV S 2 mali oproti variantomN S 1 aN S 2 nižšie % absorpcie svetla z dopadajúceho svetla. VariantyV oproti variantomN zvýšili výnos zrna a biologický výnos.
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Vidovič, J. Effect of the change of leaf angle arrangement on productivity of maize (Zea mays L.) stands. Biol Plant 16, 174–183 (1974). https://doi.org/10.1007/BF02920912
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DOI: https://doi.org/10.1007/BF02920912