MESS--Missouri Early Stressed Synthetic

A group of early lines (earliest Gaspé from R. Brawn; P.I.245134 and 245132; adapted genetic material) were combined in a population with purple aleurone and purple plant factors beginning in 1965, and the population has been subjected to diverse stresses intended to press toward early maturation in normal field planting, late field plantings, summer greenhouse, autumn greenhouse, winter greenhouse, extreme crowding, etc. Crosses with several other sources have been added to the population (Zapalote Chico; early sweet corns; Oaxaca 179, Latente) at times. Some of the plants in the population (which is very heterogeneous) flower very promptly. A few unsystematically collected examples:
 
Planted First Flowers Harvested
14 May 66 20 June (37 days) 15 Jul (62 days)
8 Aug 66 17 Sep (40) 1 Nov (85)
15 Nov 66 15 Jan (61) 20 Mar (125)
1 May 67 22 Jun (52) ---
1 May 68 22 Jun (52) 26 Jul (86)
31 Dec 68 24 Feb (55) 2 Apr (93)
9 Apr 69 20 May (41) 27 Jun (79)
27 May 70 28 Jun (32) 4 Aug (69)
14 Jan 72 15 Mar (61) 12 May (119)
11 May 72 22 Jun (42) 26 Jul (76)
25 May 72 25 Jun (31) 27 Jul (63)
19 Dec 72 8 Feb (51) 23 Mar (94)
26 Feb 76 --- 6 May (70)
7 Dec 76 --- 7 Mar (90)
12 May 77 --- 30 Jul (79)

Harvesting has usually been conducted very early; slow-maturing plants and ears will have been excluded in the development of the population. The dates of harvest above are very inconsistent with respect to maturity, however.

Self-pollinated progenies tend to be quite uniform within the progeny, both in flowering and in plant habit; the Gaspé form (low-eared) is no longer evident in the populations or progenies. Purple aleurone and purple plant variations are present in the population. Samples of MESS are available upon request.

E. H. Coe, Jr.


Please Note: Notes submitted to the Maize Genetics Cooperation Newsletter may be cited only with consent of the authors.

Return to the MNL 53 On-Line Index
Return to the Maize Newsletter Index
Return to the Maize Genome Database Page