Yeah landraces can show remarkable durability. It seems so strange to me to see a ganja plant alive outdoors in December when the days are under 9 hours. The one I grew last year, no idea what it's origins were, didn't show a single nanner either. It survived until January. I was surprised by the potency too. Even though it looked terrible and didn't smell too good it got me stoned.
I'm not surprised the Manipuri was the most mold resistant. Don't have facts to back it up. But it seems like the eastern Himalayas, Nagaland, Assam, Manipur, northern Burma and southern China, would be very wet in late flowering.
There was certainly quite a bit of boytritis but it didn't spread through the flowers. Landrace flowers are individual 'compartments'. Even when the flowers are large only certain segments rot and can be trimmed and removed. I've seen far too many dense buds ruined by a small amount of rot running up the central stalk. Even though only 20% of the bud it damaged it's worthless because there's no way to remove the moldy parts.
My biggest problem right now, after I've written off the moldy plants, is that the non-moldy ones have such extensive storm damage. Big waterlogged buds breaking stems. I have a 10 foot tall plant with almost no boytritis but there's so much water the top of the plant was hanging down almost to the ground. Must have weighed over 10 lbs. The damage this does to the THC production is terrible. The flowers are maturing rapidly but the potency is taking a bit hit from the structural damage. At least the weather has gotten cold, it's not going to help dry things out but it should halt the mold from spreading.
The Ancient OGs are showing amazing resistance. The plants have almost no boytritis, even the tops. The problem is that like a lot of stuff it still has a long way to go. The choice is to hack it in 4 days or let it go through a week or more of rain.
The good news is that mushroom season is coming early this year. I just hope this Alaskan weather trend doesn't bring an early frost. I'm calling this an Anti-Nino, wet cool conditions as opposed to dry or warm and wet.
Frisian dew, guerilla gold, purple nr 1 passion 1 are all good as far as mold is concerned
This year I grew out 12 + plants from dutch passion: frisian, purple, passion and durban. All were very late, about 7-14 days later than usual and almost all (except 2) were really sensitive to mold. The kind of mold that makes you lose a whole cola if you see a tiny speck on the outside.
Nothing worse than nurturing a plant all year long, just to have to throw it all out in the last week... I had some big loses to mold this year... Part of the game, learn and adapt, next year going with similar strains that did good this year!
Peace!