The Growth and Morphology of Two Maize Inbreds and Their Hybrid

Whaley, W. Gordon; Heimsch, Charles; Rabideau, Glenn S.

doi:10.1002/j.1537-2197.1950.tb08165.x

Cited by 9 publications

(2 citation statements)

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“…These results are in agreement with those of [56] who reported similar growth rates of a number of maize hybrids in the juvenile stage under similar N fertilization conditions. The general superiority of hybrids over their parental inbreds in overall growth is well documented [23,57,58]. In general, plant growth is affected by physiological factors such as the level of seed reserves and the efficiency of their utilization as well as the efficiency of uptake and utilization of new soil-derived resources.…”

Section: Discussionmentioning

confidence: 99%

Assessment of natural variability in leaf morphological and physiological traits in maize inbreds and their related hybrids during early vegetative growth

Ibraheem

Elghareeb

2019

Egyptian Journal of Basic and Applied Sciences

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The superior growth of maize hybrids and some inbreds may be linked to key leaf growth features and critical components in carbon and nitrogen metabolism. Here, we performed simultaneous growth, physiological and heterosis analyses of morpho-physiological traits in four maize inbreds (B73, Mo17, Sids7, Sids63) and two hybrids (B73 × Mo17&Sids7 × Sids63). B73 and Sids7 exhibited alternate superiority over Mo17 and Sids63 in most growth traits. Both hybrids gained an early advantage over their parental inbreds in growth. They showed relatively similar behavior in many growth traits but differed significantly in biomass accumulation. Physiologically, B73 and Sids7 predominated in total pigments. Further, B73 contained the highest levels of sucrose, glucose, amino-N, and total N among inbreds. Both hybrids did not significantly differ in sucrose and total soluble sugars. However, Sids7 × Sids63 had consistently higher N fractions than B73 × Mo17. Both hybrids showed common and specific heterotic patterns. The superior growth of B73, Sids7, and hybrids is positively correlated with a set of leaf morphological (leaf area, leaf breadth, and LAI) and physiological (total chlorophyll, total pigments, and total N) traits. Advantages in these traits and efficient resource utilization support the superior growth of maize genotypes.

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Section: Discussionmentioning

confidence: 99%

Assessment of natural variability in leaf morphological and physiological traits in maize inbreds and their related hybrids during early vegetative growth

Ibraheem

Elghareeb

2019

Egyptian Journal of Basic and Applied Sciences

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“…<< il est certain qu'une fois qu'une certaine grandeur de feuilles a Cte atteinte, cette grandeur se maintient constante i travers une longue sCrie de feuilles, avant qu'apparaisse la diminution de grandeur >> (Sachs 1874). Des exemples trks prtcis en ont Ct C donnCs par Whaley et al (1950) et par Williams (1974). 11 est Cvident que la fonction de Verhulst avec laquelle on peut lisser trks efficacement la croissance d'une feuille individuelle, n'est pas assez souple pour l'ajustement des feuilles successives, la sCrie foliaire au sens de Roux et al (1987).…”

Section: Introductionunclassified

Modélisation de la croissance de la tige feuillée

Cusset¹

1991

Can. J. Bot.

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Regu le 8 aoiit 1990 CUSSET, G. 1991. ModClisation de la croissance de la tige feuillke. Can. J. Bot. 69 : 1810-1818.Proposition d'un modkle simulant la croissance d'un axe et de sa sCrie foliaire, pendant une grande pCriode d'accroissement. Examen de la valeur biologique des tquations et des paramktres utilisCs. Remarques sur la notion de catigorie d'organe.A model is proposed, which simulates the growth of an axis and its series of leaves, during a long period of growth. Biological validations of the equations and of the parameters are proposed along with remarks on the concept of organ category.

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