Tobacco Photoperiod Sensitivity

[JessicaNicot]

I know that Stewart Cuban (PI 552761) is also photoperiod sensitive. It was in my grow out last year.

 

[holyRYO]

I know that Stewart Cuban (PI 552761) is also photoperiod sensitive. It was in my grow out last year.

Amazing, I counted 31 leaves in the picture, the picture does not show all of them, and still not flowering. Truely a Manfred (woolly mammoth from Ice Age).

 

[holyRYO]

Bamboo Shoot has mammoth growth habit and long maturity... could it be a photoperiod sensitive type?

 

[JessicaNicot]

I actually do not have any pictures yet of Bamboo Shoot and it was last grown in 2008, the year before I started with the collection. It will be quite a while before it comes up for grow out again and I don't have any notes that indicate its photoperiod sensitive so I just can't really say....

 

[holyRYO]

I actually do not have any pictures yet of Bamboo Shoot and it was last grown in 2008, the year before I started with the collection. It will be quite a while before it comes up for grow out again and I don't have any notes that indicate its photoperiod sensitive so I just can't really say....

Thanks.

What I have scoured from the net on photoperiod sensitive varieties. Though they look to have huge yields, if grown past the normal amount of leafs, the leafs get small and so thin and of poor quality (low nicotine), that they contribute little to the overall bounty. NC 27 NF and NC 37 NF, when topped to normal amount of leafs, produces large leafs and high yields of high quality tobacco. Because they are harvested before the flowering stage, little to no suckering, an obvious attribute.

 

[JessicaNicot]

so this was originally posted in my grow blog but I think it makes more sense here:

Here is a list of things which I know ARE NOT true "mammoth" types (do not display photoperiod sensitivity):
PI 552318 TC 327 Mammoth Gold
PI 552319 TC 328 Mammoth Yellow
PI 552336 TC 450 White Mammoth
PI 552338 TC 453 Yellow Mammoth
PI 552782 TC 454 Yellow Mammoth, Black Shank Resistant
PI 552439 TC 461 Black Mammoth
PI 551328 TC 481 Mosaic Resistant (MR) Black Mammoth
TC 641 Black Mammoth Small Stalk

However, if you are interested in trying out a true photoperiod sensitive type, I can confirm that the following lines DO have this trait:
PI 552600 TC 12 Burley Mammoth Ky 16
PI 552761 TC 214 Stewart Cuban
PI 552711 TC 348 NC 22 NF
PI 551309 TC 349 NC 27 NF
PI 552712 TC 350 NC 37 NF
PI 551337 TC 507 Maryland Mammoth
PI 551338 TC 508 Maryland Standup Mammoth

 

[istanbulin]

I guess I found another photoperiod sensitive variety, Cubita Seed (PI 408941, Colombia). It was planted on the first week of May, so it's in the ground for almost 100 days, and just started to bloom.
While the plant itself is tall ( approx. 8'), leaves are a little longer than a foot. I couldn't measure the plant exactly because of the nightfall today but I'll.

 

[JessicaNicot]

So I took a couple photos yesterday in the nursery and it really isn't hard to tell where the mammoths are:



This is NC 22 NF, which is about 10ft tall and just now beginning to flower 16 weeks after transplanting.



This is NC 27 NF with only 2 of 5 plants flowering so far. It's about 8ft tall.



NC 37 NF is below, also about 8ft tall.



This is Maryland Standup Mammoth and right now it is 7-8ft and none of the 3 plants are flowering.

 

[JessicaNicot]

I guess I found another photoperiod sensitive variety, Cubita Seed (PI 408941, Colombia). It was planted on the first week of May, so it's in the ground for almost 100 days, and just started to bloom.
While the plant itself is tall ( approx. 8'), leaves are a little longer than a foot. I couldn't measure the plant exactly because of the nightfall today but I'll.

thanks for the heads up. I haven't grown this one out yet and it will probably be 4 or 5 years before it comes up on rotation for regeneration.

 

[holyRYO]

Thanks for the pics and info. That's alot of green.

Suspect that the ever popular African Red PI 420191 has some mammoth in it's breeding by its growth habit and longish maturity 80 days.

http://nwtseeds.com/African_Red_4.jpg