Archive for March, 2007

Day# 26, cotton seedlings’ true leaves developing

March 28, 2007

Most of the Pima and Upland cotton plants now each have at least one true leaf; the larger leaves are about 0.5 and 0.4 inches long, respectively.

firstPimaTrueLeafuplandfirsttrueleaf-004f.jpg

The Turquoise seedling now has a true leaf emerging just above the cotyledon “leaf” that did not survive.

TurquoiseSeelingFirstTrueLeaf

 

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Day# 22, Turquoise seedling troubles

March 24, 2007

The Turquoise cotton seedling emerged with a cotyledon damaged at the base, and cannot develop or drop down to horizontal. The other cotyledon does not look like either Pima or Upland. Perhaps the Turquoise seed is a third species, perhaps it is struggling to do double duty, perhaps it is about to die. Of the seventeen seeds that have emerged, this is the first one to have any problems. The photosynthetic process has not yet really kicked in for the Turquoise seedling.

Damaged Turquoise stemTopView

 

 

If you want to know one reason why plants appear green, you might want to check out this link.

http://www.pa.msu.edu/sciencet/ask_st/081496.html

On Day# 8, there was a suggested the markings on the Pima cotyledons might be indicative of a problem. All Pimas displaying these marking are setting plumules. An Internet image search on “Pima cotydelon” and “Pima cotydelons” has resulted in no relevant hits. Whether these patterns are normal is unanswered.

Day# 18, Turquoise cotton seed emerges

March 20, 2007

Looking closely between the cotyledons of the Upland cotton seedling, the plumule (first true leaves) can be seen.

emerging upland plumule

The Turquoise cotton seed emerges.

Emerging Turquoise seed

 

At least one of each of the three kinds of cotton seeds have now emerged; Pima, Upland, and one of the turquoise-dyed seeds in the Upland seed bag.

Day #14, Upland plumules developing

March 16, 2007

Plumules are growing, but less evident on the Upland cotton plants, they are about two days behind the Pima cotton plants’ development.

Upland cotton plumule node

 

Different shapes of the Pima and Upland cotton cotyledons.

Pima cotyledon top viewUpland cotyleton to view

 

Six of the eight Pima cotton seeds have broken through the soil, seven of thirteen Upland cotton plants are in the same state. The mysterious Turquoise cotton seed has not yet appeared.

While washing dishes, something out there in the peripheral vision zone caught my attention. An unopened Pima on the counter waiting for some water was making a quaking motion. My first thought was an earthworm under the roots. After about a minute, the cotyledons popped opened, and the plant went back to normal.

Checked both Oregon Historical Society’s and University of Oregon’s on-line catalogues for cotton crops grown in Oregon. There does not seem to be any attempt at this venture here.

Before starting this endeavor, my total erudition of cotton was that tube socks always fit, and it may still be at this level. All knowledge attained over the past several weeks regarding cotto, has been from the Internet, so please judge posts with your 0.01 aangstrom learning filter in place. There are many good sources on the subject of cotton, one of my favorites is

 

http://peanut.tamu.edu/Homepage/Todd/physiology_cottonresources.htm

Day# 13, Pima plumules appear

March 15, 2007

Cotyledons on the Pima cotton plants are open and have started splitting. Plumules are beginning to develop. Below photograph shows a bulging Pima cotton stem and the first true leaves emerging.

Emerging Pima cotton plumule

Each plant will be tagged when it reaches this stage. The seedling up for discussion is denoted P-2-13. There are at least two ways to designating a cotton plant’s age; date planted, and the date the cotyledons are fully open. In the current case, the cotyledons opened 11 days after planting.

 

Day #10 2 Upland seedlings appear

March 12, 2007

The first Upland opened today.

Upland cotton Seedling

 

The seeds were soaked in water, the soil is damp, but not soaking, and there has been no sunshine. The cotyledons on both varieties are marked with brown spots. The spots are almost symmetrical, perhaps indicating some problem with the unfolding process. Will give them about a week to see what happens before possibly starting another set of seeds.

Below is today’s photo of one Pima featured in yesterday’s posting

PimaSeedlingWithLeafProblem

Day #8, 2 Pima seedlings appear

March 10, 2007

 

 CORRECTION:  Title inadvertently stated Upland Seedling

Checked the Pimas this morning, and two have breached the soil.

east Pima Seedling’s first daywest Pima seedling’s first day

According to the University of Georgia Cotton Growth and Development pamphlet, p. 5, the tap root can grow ten inches before the cotyledons appear. One of the Pimas, tap roots is just over 6.5 inches long. Impressive what a seed can do in eight days. The other Pima’s tap root is about the same length.

In this photograph, the root end it is being held in place by a paper clip

Tap root

Both plants have been moved from 8 oz. Containers to 32 oz. Containers.

Tranplanted Pima

Sixteen Upland seeds were soaked, and thirteen have been planted. There should be enough seeds in the soil for the project. Decided to open one of the three Upland seeds not yet planted. Using fingernails, the first two seeds were destroyed by my clumsy methodology. The third seed opened in one piece. There is a slight mar on the left side of the seed where it was probably bruised by my less than scientific style. Before the complete removal of the casing, the seed was starting to expand, My gestimate would be it increased in volume by about 10-15 percent by being released from the cover.

covering removed from seed

Day#6, five Upland cotton seeds planted

March 8, 2007

Checked the eight unplanted Upland seeds, and decided four should be planted. Put the four to be burried in an identical amber pill bottle as the seeds to continue germinating in water. Picking up the bottle to plant the second seed, four seeds were in the bottle. Sure enough, one of the less developed seeds was planted.

The Turquoise seed is planted.

Day #4, eight Upland cotton seeds planted

March 6, 2007

Eight of the sixteen Upland seeds have matured to the stage of the Pima seeds when they were planted. Seven Upland seeds are less developed, and one seed casing has not yet fissured.

The Turquoise seed casing is starting to open.

Day #2, Pima seeds planted

March 5, 2007

Each of the eight Pima seeds coverings are starting to open, and the nub of a root is starting to emerge.

Pima seeds opening

A closer look at a typical Pima seed.

Pima seed close-up

Pima seeds are planted about an inch deep, individually in eight-ounce yogurt cups that have holes punched in the bottom.

Planted Pima Seed

The Upland seeds are not quite as far along, and am going to give them another day of soaking.

Mysterious Turquoise seed is not yet developing.