Wikipedia:Reference desk/Archives/Science/2020 June 13

= June 13 =

How many kernels in one row of triticum durum?
How many kernels in one row of triticum durum? (compare with barley that has 2 and 6 rows)--ThePupil (talk) 20:35, 13 June 2020 (UTC)
 * [Just for reference, it's "row", not "raw", and "barley", not "barely".] {The poster formerly known as 87.81.230.195} 90.200.41.14 (talk) 23:29, 13 June 2020 (UTC)


 * This source reports that a "normal" six-row barley ear has about 23 kernels. On online images of ears of Triticum durum I count 12 to 22 kernels per ear, with an average of about 18, but they may represent more photogenic, not necessarily typical ears. According to a study entitled "Evaluation of Grain Yield and Its Components in Durum Wheat under Mediterranean Conditions", the mean yield as measured by number of kernels in a "spike" (which is the same as an ear) of durum wheat grown in Spain in two seasons (cool 1998 and warm 1999) depends very much on the temperature and irrigation, as shown in this table:
 * {| class="wikitable" style="text-align: center; width: 100px; height: 100px;"

! ! Irrigated ! Rainfed ! Cool ! Warm
 * 28.8 || 22.5
 * 32.3 || 25.1
 * }
 * --Lambiam 08:53, 14 June 2020 (UTC)
 * Thank you. I thought 6 row means that there are 6 kernels in one row. Isn't it?ThePupil (talk) 13:00, 17 June 2020 (UTC)
 * It means that each ear has six vertical rows of kernels. You can see a closeup of an ear in this photo. Along the side that is visible you can count three rows. (The rightmost row is mostly hidden by the hairs at the tip of each kernel but is visible near then base of the ear. You can also see the tip of another ear at the bottom of the image; there three rows are more visible.) The other three are along the other side. --Lambiam 07:53, 19 June 2020 (UTC)