from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Plural form of daylength.


Sorry, no etymologies found.


  • The timing of this peak roughly coincides with the summer solstice when daylengths are at their longest and solar heights are their greatest (Figure 6).

    Daily and annual cycles of temperature

  • Some crops require long or short days to flower, so plants must be selected for their adaptation to tropical daylengths and grown in the proper window for seed production.

    Chapter 24

  • (Some genotypes flower just 35 days after planting; others can be induced into this by employing short daylengths and high temperatures.) · It produces masses of progeny.

    6. Pearl Millet: Commercial Types

  • Some of these traditional forms are extremely susceptible to photoperiod and reach impossible heights if not planted as daylengths shorten.

    7. Sorghum

  • Most traditional varieties differentiate from vegetative to reproductive growth when daylengths shorten to 12 hours.

    7. Sorghum

  • The final result was a cornucopia of various sorghums - all broadly adaptable to various daylengths, all short in stature, and all early maturing.

    9. Sorghum: Commercial Types

  • This annual or short-lived perennial is self-pollinating and prefers short daylengths.

    Chapter 9

  • This may be due to their needs for particular daylengths or temperatures that do not occur during some seasons.

    5. How plants live and grow

  • The late maturity that originally contributed to triticale's low yields in Mexico was largely caused by the Canadian triticales 'requirements for long daylengths.

    3 Triticale Today

  • It is probably the most adaptable of all amaranth species, and it flowers, for example, under a wider range of daylengths than the others.

    4 Grain Amaranths


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